Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridViewImageColumn.cs / 1 / DataGridViewImageColumn.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Text; using System.Drawing; using System.Diagnostics; using System.ComponentModel; using System.Windows.Forms; using System.Diagnostics.CodeAnalysis; using System.Globalization; ///[ToolboxBitmapAttribute(typeof(DataGridViewImageColumn), "DataGridViewImageColumn.bmp")] public class DataGridViewImageColumn : DataGridViewColumn { private static Type columnType = typeof(DataGridViewImageColumn); private Image image; private Icon icon; /// public DataGridViewImageColumn() : this(false /*valuesAreIcons*/) { } /// [ SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors") // Can't think of a workaround. ] public DataGridViewImageColumn(bool valuesAreIcons) : base(new DataGridViewImageCell(valuesAreIcons)) { DataGridViewCellStyle defaultCellStyle = new DataGridViewCellStyle(); defaultCellStyle.AlignmentInternal = DataGridViewContentAlignment.MiddleCenter; if (valuesAreIcons) { defaultCellStyle.NullValue = DataGridViewImageCell.ErrorIcon; } else { defaultCellStyle.NullValue = DataGridViewImageCell.ErrorBitmap; } this.DefaultCellStyle = defaultCellStyle; } /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public override DataGridViewCell CellTemplate { get { return base.CellTemplate; } set { if (value != null && !(value is System.Windows.Forms.DataGridViewImageCell)) { throw new InvalidCastException(SR.GetString(SR.DataGridViewTypeColumn_WrongCellTemplateType, "System.Windows.Forms.DataGridViewImageCell")); } base.CellTemplate = value; } } /// [ Browsable(true), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridView_ColumnDefaultCellStyleDescr) ] public override DataGridViewCellStyle DefaultCellStyle { get { return base.DefaultCellStyle; } set { base.DefaultCellStyle = value; } } /// [ Browsable(true), DefaultValue(""), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridViewImageColumn_DescriptionDescr) ] public string Description { get { if (this.CellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ImageCellTemplate.Description; } set { if (this.CellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } this.ImageCellTemplate.Description = 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); DataGridViewImageCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewImageCell; if (dataGridViewCell != null) { dataGridViewCell.Description = value; } } } } } /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public Icon Icon { get { return this.icon; } set { this.icon = value; if (this.DataGridView != null) { this.DataGridView.OnColumnCommonChange(this.Index); } } } /// [ DefaultValue(null), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridViewImageColumn_ImageDescr) ] public Image Image { get { return this.image; } set { this.image = value; if (this.DataGridView != null) { this.DataGridView.OnColumnCommonChange(this.Index); } } } private DataGridViewImageCell ImageCellTemplate { get { return (DataGridViewImageCell) this.CellTemplate; } } /// [ DefaultValue(DataGridViewImageCellLayout.Normal), SRCategory(SR.CatAppearance), SRDescription(SR.DataGridViewImageColumn_ImageLayoutDescr) ] public DataGridViewImageCellLayout ImageLayout { get { if (this.CellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } DataGridViewImageCellLayout imageLayout = this.ImageCellTemplate.ImageLayout; if (imageLayout == DataGridViewImageCellLayout.NotSet) { imageLayout = DataGridViewImageCellLayout.Normal; } return imageLayout; } set { if (this.ImageLayout != value) { this.ImageCellTemplate.ImageLayout = 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); DataGridViewImageCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewImageCell; if (dataGridViewCell != null) { dataGridViewCell.ImageLayoutInternal = value; } } this.DataGridView.OnColumnCommonChange(this.Index); } } } } /// [ Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) ] public bool ValuesAreIcons { get { if (this.ImageCellTemplate == null) { throw new InvalidOperationException(SR.GetString(SR.DataGridViewColumn_CellTemplateRequired)); } return this.ImageCellTemplate.ValueIsIcon; } set { if (this.ValuesAreIcons != value) { this.ImageCellTemplate.ValueIsIconInternal = 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); DataGridViewImageCell dataGridViewCell = dataGridViewRow.Cells[this.Index] as DataGridViewImageCell; if (dataGridViewCell != null) { dataGridViewCell.ValueIsIconInternal = value; } } this.DataGridView.OnColumnCommonChange(this.Index); } if (value && this.DefaultCellStyle.NullValue is Bitmap && (Bitmap) this.DefaultCellStyle.NullValue == DataGridViewImageCell.ErrorBitmap) { this.DefaultCellStyle.NullValue = DataGridViewImageCell.ErrorIcon; } else if (!value && this.DefaultCellStyle.NullValue is Icon && (Icon) this.DefaultCellStyle.NullValue == DataGridViewImageCell.ErrorIcon) { this.DefaultCellStyle.NullValue = DataGridViewImageCell.ErrorBitmap; } } } } /// public override object Clone() { DataGridViewImageColumn dataGridViewColumn; Type thisType = this.GetType(); if (thisType == columnType) //performance improvement { dataGridViewColumn = new DataGridViewImageColumn(); } else { // SECREVIEW : Late-binding does not represent a security thread, see bug#411899 for more info.. // dataGridViewColumn = (DataGridViewImageColumn)System.Activator.CreateInstance(thisType); } if (dataGridViewColumn != null) { base.CloneInternal(dataGridViewColumn); dataGridViewColumn.Icon = this.icon; dataGridViewColumn.Image = this.image; } return dataGridViewColumn; } private bool ShouldSerializeDefaultCellStyle() { DataGridViewImageCell templateCell = this.CellTemplate as DataGridViewImageCell; if (templateCell == null) { Debug.Fail("we can't compute the default cell style w/o a template cell"); return true; } if (!this.HasDefaultCellStyle) { return false; } object defaultNullValue; if (templateCell.ValueIsIcon) { defaultNullValue = DataGridViewImageCell.ErrorIcon; } else { defaultNullValue = DataGridViewImageCell.ErrorBitmap; } DataGridViewCellStyle defaultCellStyle = this.DefaultCellStyle; return (!defaultCellStyle.BackColor.IsEmpty || !defaultCellStyle.ForeColor.IsEmpty || !defaultCellStyle.SelectionBackColor.IsEmpty || !defaultCellStyle.SelectionForeColor.IsEmpty || defaultCellStyle.Font != null || !defaultNullValue.Equals(defaultCellStyle.NullValue) || !defaultCellStyle.IsDataSourceNullValueDefault || !String.IsNullOrEmpty(defaultCellStyle.Format) || !defaultCellStyle.FormatProvider.Equals(System.Globalization.CultureInfo.CurrentCulture) || defaultCellStyle.Alignment != DataGridViewContentAlignment.MiddleCenter || defaultCellStyle.WrapMode != DataGridViewTriState.NotSet || defaultCellStyle.Tag != null || !defaultCellStyle.Padding.Equals(Padding.Empty)); } /// public override string ToString() { StringBuilder sb = new StringBuilder(64); sb.Append("DataGridViewImageColumn { 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. 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