Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridViewComboBoxColumn.cs / 1 / DataGridViewComboBoxColumn.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Text; using System.ComponentModel; using System.Diagnostics; using System.Drawing; using System.Drawing.Design; using System.Globalization; ///[ Designer("System.Windows.Forms.Design.DataGridViewComboBoxColumnDesigner, " + AssemblyRef.SystemDesign), ToolboxBitmapAttribute(typeof(DataGridViewComboBoxColumn), "DataGridViewComboBoxColumn.bmp") ] public class DataGridViewComboBoxColumn : DataGridViewColumn { private static Type columnType = typeof(DataGridViewComboBoxColumn); /// public DataGridViewComboBoxColumn() : base(new DataGridViewComboBoxCell()) { ((DataGridViewComboBoxCell)base.CellTemplate).TemplateComboBoxColumn = this; } /// [ Browsable(true), DefaultValue(true), SRCategory(SR.CatBehavior), SRDescription(SR.DataGridView_ComboBoxColumnAutoCompleteDescr) ] public bool AutoComplete { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.AutoComplete; } set { if (this.AutoComplete != value) { this.ComboBoxCellTemplate.AutoComplete = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.AutoComplete = value; } } } } } } /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public override DataGridViewCell CellTemplate { get { return base.CellTemplate; } set { DataGridViewComboBoxCell dataGridViewComboBoxCell = value as DataGridViewComboBoxCell; if (value != null && dataGridViewComboBoxCell == null) { throw new InvalidCastException(SR.GetString(SR.DataGridViewTypeColumn_WrongCellTemplateType, "System.Windows.Forms.DataGridViewComboBoxCell")); } base.CellTemplate = value; if (value != null) { dataGridViewComboBoxCell.TemplateComboBoxColumn = this; } } } private DataGridViewComboBoxCell ComboBoxCellTemplate { get { return (DataGridViewComboBoxCell) this.CellTemplate; } } /// [ DefaultValue(null), SRCategory(SR.CatData), SRDescription(SR.DataGridView_ComboBoxColumnDataSourceDescr), RefreshProperties(RefreshProperties.Repaint), AttributeProvider(typeof(IListSource)), ] public object DataSource { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.DataSource; } set { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } this.ComboBoxCellTemplate.DataSource = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.DataSource = value; } } this.DataGridView.OnColumnCommonChange(this.Index); } } } /// [ DefaultValue(""), SRCategory(SR.CatData), SRDescription(SR.DataGridView_ComboBoxColumnDisplayMemberDescr), TypeConverterAttribute("System.Windows.Forms.Design.DataMemberFieldConverter, " + AssemblyRef.SystemDesign), Editor("System.Windows.Forms.Design.DataMemberFieldEditor, " + AssemblyRef.SystemDesign, typeof(System.Drawing.Design.UITypeEditor)) ] public string DisplayMember { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.DisplayMember; } set { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } this.ComboBoxCellTemplate.DisplayMember = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.DisplayMember = value; } } this.DataGridView.OnColumnCommonChange(this.Index); } } } /// [ DefaultValue(DataGridViewComboBoxDisplayStyle.DropDownButton), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridView_ComboBoxColumnDisplayStyleDescr) ] public DataGridViewComboBoxDisplayStyle DisplayStyle { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.DisplayStyle; } set { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } this.ComboBoxCellTemplate.DisplayStyle = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.DisplayStyleInternal = value; } } // Calling InvalidateColumn instead of OnColumnCommonChange because DisplayStyle does not affect preferred size. this.DataGridView.InvalidateColumn(this.Index); } } } /// [ DefaultValue(false), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridView_ComboBoxColumnDisplayStyleForCurrentCellOnlyDescr) ] public bool DisplayStyleForCurrentCellOnly { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.DisplayStyleForCurrentCellOnly; } set { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } this.ComboBoxCellTemplate.DisplayStyleForCurrentCellOnly = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.DisplayStyleForCurrentCellOnlyInternal = value; } } // Calling InvalidateColumn instead of OnColumnCommonChange because DisplayStyleForCurrentCellOnly does not affect preferred size. this.DataGridView.InvalidateColumn(this.Index); } } } /// [ DefaultValue(1), SRCategory(SR.CatBehavior), SRDescription(SR.DataGridView_ComboBoxColumnDropDownWidthDescr), ] public int DropDownWidth { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.DropDownWidth; } set { if (this.DropDownWidth != value) { this.ComboBoxCellTemplate.DropDownWidth = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.DropDownWidth = value; } } } } } } /// [ DefaultValue(FlatStyle.Standard), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridView_ComboBoxColumnFlatStyleDescr), ] public FlatStyle FlatStyle { get { if (this.CellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return ((DataGridViewComboBoxCell) this.CellTemplate).FlatStyle; } set { if (this.FlatStyle != value) { ((DataGridViewComboBoxCell)this.CellTemplate).FlatStyle = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.FlatStyleInternal = value; } } this.DataGridView.OnColumnCommonChange(this.Index); } } } } /// [ Editor("System.Windows.Forms.Design.StringCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)), DesignerSerializationVisibility(DesignerSerializationVisibility.Content), SRCategory(SR.CatData), SRDescription(SR.DataGridView_ComboBoxColumnItemsDescr) ] public DataGridViewComboBoxCell.ObjectCollection Items { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.GetItems(this.DataGridView); } } /// [ DefaultValue(""), SRCategory(SR.CatData), SRDescription(SR.DataGridView_ComboBoxColumnValueMemberDescr), TypeConverterAttribute("System.Windows.Forms.Design.DataMemberFieldConverter, " + AssemblyRef.SystemDesign), Editor("System.Windows.Forms.Design.DataMemberFieldEditor, " + AssemblyRef.SystemDesign, typeof(System.Drawing.Design.UITypeEditor)) ] public string ValueMember { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.ValueMember; } set { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } this.ComboBoxCellTemplate.ValueMember = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.ValueMember = value; } } this.DataGridView.OnColumnCommonChange(this.Index); } } } /// [ DefaultValue(DataGridViewComboBoxCell.DATAGRIDVIEWCOMBOBOXCELL_defaultMaxDropDownItems), SRCategory(SR.CatBehavior), SRDescription(SR.DataGridView_ComboBoxColumnMaxDropDownItemsDescr) ] public int MaxDropDownItems { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.MaxDropDownItems; } set { if (this.MaxDropDownItems != value) { this.ComboBoxCellTemplate.MaxDropDownItems = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.MaxDropDownItems = value; } } } } } } /// [ DefaultValue(false), SRCategory(SR.CatBehavior), SRDescription(SR.DataGridView_ComboBoxColumnSortedDescr) ] public bool Sorted { get { if (this.ComboBoxCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ComboBoxCellTemplate.Sorted; } set { if (this.Sorted != value) { this.ComboBoxCellTemplate.Sorted = value; if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.Sorted = value; } } } } } } /// public override object Clone() { DataGridViewComboBoxColumn dataGridViewColumn; Type thisType = this.GetType(); if (thisType == columnType) //performance improvement { dataGridViewColumn = new DataGridViewComboBoxColumn(); } else { // SECREVIEW : Late-binding does not represent a security thread, see bug#411899 for more info.. // dataGridViewColumn = (DataGridViewComboBoxColumn)System.Activator.CreateInstance(thisType); } if (dataGridViewColumn != null) { base.CloneInternal(dataGridViewColumn); ((DataGridViewComboBoxCell) dataGridViewColumn.CellTemplate).TemplateComboBoxColumn = dataGridViewColumn; } return dataGridViewColumn; } internal void OnItemsCollectionChanged() { // Items collection of the CellTemplate was changed. // Update the items collection of each existing DataGridViewComboBoxCell in the column. if (this.DataGridView != null) { DataGridViewRowCollection dataGridViewRows = this.DataGridView.Rows; int rowCount = dataGridViewRows.Count; object[] items = ((DataGridViewComboBoxCell)this.CellTemplate).Items.InnerArray.ToArray(); for (int rowIndex = 0; rowIndex < rowCount; rowIndex++) { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewComboBoxCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewComboBoxCell; if (dataGridViewCell != null) { dataGridViewCell.Items.ClearInternal(); dataGridViewCell.Items.AddRangeInternal(items); } } this.DataGridView.OnColumnCommonChange(this.Index); } } /// /// /// public override string ToString() { StringBuilder sb = new StringBuilder(64); sb.Append("DataGridViewComboBoxColumn { Name="); sb.Append(this.Name); sb.Append(", Index="); sb.Append(this.Index.ToString(CultureInfo.CurrentCulture)); sb.Append(" }"); return sb.ToString(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.///
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