306 lines
14 KiB
C#
306 lines
14 KiB
C#
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using System;
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using System.Text;
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using System.Diagnostics;
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using System.Globalization;
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using System.Windows.Forms;
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using System.ComponentModel;
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namespace DataGridViewRadioButtonElements
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{
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/// <summary>
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/// Custom column type dedicated to the DataGridViewRadioButtonCell cell type.
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/// </summary>
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public class DataGridViewRadioButtonColumn : DataGridViewColumn
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{
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/// <summary>
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/// Column constructor that uses a default DataGridViewRadioButtonCell cell for its CellTemplate.
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/// </summary>
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public DataGridViewRadioButtonColumn() : base(new DataGridViewRadioButtonCell())
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{
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}
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/// <summary>
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/// Represents the implicit cell that gets cloned when adding rows to the grid.
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/// </summary>
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[
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Browsable(false),
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DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
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]
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public override DataGridViewCell CellTemplate
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{
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get
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{
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return base.CellTemplate;
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}
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set
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{
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DataGridViewRadioButtonCell dataGridViewRadioButtonCell = value as DataGridViewRadioButtonCell;
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if (value != null && dataGridViewRadioButtonCell == null)
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{
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throw new InvalidCastException("Value provided for CellTemplate must be of type DataGridViewRadioButtonElements.DataGridViewRadioButtonCell or derive from it.");
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}
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base.CellTemplate = value;
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}
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}
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/// <summary>
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/// Replicates the DataSource property of the DataGridViewRadioButtonCell cell type.
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/// </summary>
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[
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AttributeProvider(typeof(IListSource)),
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Category("Data"),
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DefaultValue(null),
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Description("The data source that populates the radio buttons."),
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RefreshProperties(RefreshProperties.Repaint)
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]
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public object DataSource
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{
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get
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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return this.RadioButtonCellTemplate.DataSource;
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}
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set
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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this.RadioButtonCellTemplate.DataSource = value;
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if (this.DataGridView != null)
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{
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DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
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int rowCount = dataGridViewRows.Count;
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for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
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{
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DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
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DataGridViewRadioButtonCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewRadioButtonCell;
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if (dataGridViewCell != null)
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{
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dataGridViewCell.DataSource = value;
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}
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}
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this.DataGridView.InvalidateColumn(this.Index);
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// TODO: This column and/or grid rows may need to be autosized depending on their
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// autosize settings. Call the autosizing methods to autosize the column, rows,
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// column headers / row headers as needed.
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}
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}
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}
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/// <summary>
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/// Replicates the DisplayMember property of the DataGridViewRadioButtonCell cell type.
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/// </summary>
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[
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Category("Data"),
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DefaultValue(""),
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Description("A string that specifies the property or column from which to retrieve strings for display in the radio buttons."),
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Editor("System.Windows.Forms.Design.DataMemberFieldEditor, System.Design", typeof(System.Drawing.Design.UITypeEditor)),
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TypeConverterAttribute("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design")
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]
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public string DisplayMember
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{
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get
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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return this.RadioButtonCellTemplate.DisplayMember;
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}
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set
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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this.RadioButtonCellTemplate.DisplayMember = value;
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if (this.DataGridView != null)
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{
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DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
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int rowCount = dataGridViewRows.Count;
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for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
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{
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DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
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DataGridViewRadioButtonCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewRadioButtonCell;
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if (dataGridViewCell != null)
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{
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dataGridViewCell.DisplayMember = value;
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}
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}
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this.DataGridView.InvalidateColumn(this.Index);
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// TODO: Add code to autosize the column and rows, the column headers,
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// the row headers, depending on the autosize settings of the grid.
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}
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}
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}
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/// <summary>
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/// Replicates the Items property of the DataGridViewRadioButtonCell cell type.
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/// </summary>
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[
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Category("Data"),
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Description("The collection of objects used as entries for the radio buttons."),
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DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
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Editor("System.Windows.Forms.Design.StringCollectionEditor, System.Design", typeof(System.Drawing.Design.UITypeEditor))
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]
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public DataGridViewRadioButtonCell.ObjectCollection Items
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{
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get
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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return this.RadioButtonCellTemplate.Items;
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}
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}
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/// <summary>
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/// Replicates the MaxDisplayedItems property of the DataGridViewRadioButtonCell cell type.
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/// </summary>
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[
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Category("Behavior"),
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DefaultValue(DataGridViewRadioButtonCell.DATAGRIDVIEWRADIOBUTTONCELL_defaultMaxDisplayedItems),
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Description("The maximum number of radio buttons to display in the cells of the column.")
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]
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public int MaxDisplayedItems
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{
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get
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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return this.RadioButtonCellTemplate.MaxDisplayedItems;
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}
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set
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{
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if (this.MaxDisplayedItems != value)
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{
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this.RadioButtonCellTemplate.MaxDisplayedItems = value;
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if (this.DataGridView != null)
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{
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DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
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int rowCount = dataGridViewRows.Count;
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for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
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{
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DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
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DataGridViewRadioButtonCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewRadioButtonCell;
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if (dataGridViewCell != null)
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{
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dataGridViewCell.MaxDisplayedItemsInternal = value;
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}
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}
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this.DataGridView.InvalidateColumn(this.Index);
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// TODO: Add code to autosize the column and rows, the column headers,
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// the row headers, depending on the autosize settings of the grid.
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}
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}
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}
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}
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/// <summary>
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/// Small utility function that returns the template cell as a DataGridViewRadioButtonCell.
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/// </summary>
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private DataGridViewRadioButtonCell RadioButtonCellTemplate
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{
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get
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{
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return (DataGridViewRadioButtonCell)this.CellTemplate;
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}
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}
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/// <summary>
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/// Replicates the ValueMember property of the DataGridViewRadioButtonCell cell type.
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/// </summary>
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[
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Category("Data"),
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DefaultValue(""),
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Description("A string that specifies the property or column from which to get values that correspond to the radio buttons."),
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Editor("System.Windows.Forms.Design.DataMemberFieldEditor, System.Design", typeof(System.Drawing.Design.UITypeEditor)),
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TypeConverterAttribute("System.Windows.Forms.Design.DataMemberFieldConverter, System.Design")
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]
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public string ValueMember
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{
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get
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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return this.RadioButtonCellTemplate.ValueMember;
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}
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set
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{
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if (this.RadioButtonCellTemplate == null)
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{
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throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
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}
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this.RadioButtonCellTemplate.ValueMember = value;
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if (this.DataGridView != null)
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{
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DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
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int rowCount = dataGridViewRows.Count;
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for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
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{
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DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
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DataGridViewRadioButtonCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewRadioButtonCell;
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if (dataGridViewCell != null)
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{
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dataGridViewCell.ValueMember = value;
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}
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}
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this.DataGridView.InvalidateColumn(this.Index);
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// TODO: Add code to autosize the column and rows, the column headers,
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// the row headers, depending on the autosize settings of the grid.
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}
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}
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}
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/// <summary>
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/// Call this public method when the Items collection of this column's CellTemplate was changed.
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/// Updates the items collection of each existing DataGridViewRadioButtonCell in the column.
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/// </summary>
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public void NotifyItemsCollectionChanged()
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{
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if (this.DataGridView != null)
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{
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DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows;
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int rowCount = dataGridViewRows.Count;
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DataGridViewRadioButtonCell cellTemplate = this.CellTemplate as DataGridViewRadioButtonCell;
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object[] items = new object[cellTemplate.Items.Count];
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cellTemplate.Items.CopyTo(items, 0);
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for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
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{
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DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
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DataGridViewRadioButtonCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewRadioButtonCell;
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if (dataGridViewCell != null)
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{
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dataGridViewCell.Items.Clear();
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dataGridViewCell.Items.AddRange(items);
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}
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}
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this.DataGridView.InvalidateColumn(this.Index);
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// This column and/or rows may need to be autosized.
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}
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}
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/// <summary>
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/// Returns a standard compact string representation of the column.
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/// </summary>
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public override string ToString()
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{
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StringBuilder sb = new StringBuilder(64);
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sb.Append("DataGridViewRadioButtonColumn { Name=");
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sb.Append(this.Name);
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sb.Append(", Index=");
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sb.Append(this.Index.ToString(CultureInfo.CurrentCulture));
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sb.Append(" }");
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return sb.ToString();
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}
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}
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}
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