Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / DataGridDesigner.cs / 1 / DataGridDesigner.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.Design { using System.Design; using System.ComponentModel; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System; using System.Collections; using System.Windows.Forms; using System.Data; using System.ComponentModel.Design; using System.Drawing; using Microsoft.Win32; using System.Windows.Forms.ComponentModel; ////// /// internal class DataGridDesigner : System.Windows.Forms.Design.ControlDesigner { ///Provides a base designer for data grids. ////// /// protected DesignerVerbCollection designerVerbs; private IComponentChangeService changeNotificationService = null; ///Gets the design-time verbs suppoted by the component associated with the /// designer. ////// /// private DataGridDesigner() { designerVerbs = new DesignerVerbCollection(); designerVerbs.Add(new DesignerVerb(SR.GetString(SR.DataGridAutoFormatString), new EventHandler(this.OnAutoFormat))); AutoResizeHandles = true; } public override void Initialize(IComponent component) { base.Initialize(component); IDesignerHost dh = (IDesignerHost) this.GetService(typeof(IDesignerHost)); if (dh != null) { changeNotificationService = (IComponentChangeService) dh.GetService(typeof(IComponentChangeService)); if (changeNotificationService != null) changeNotificationService.ComponentRemoved += new ComponentEventHandler(DataSource_ComponentRemoved); } } private void DataSource_ComponentRemoved(object sender, ComponentEventArgs e) { DataGrid d = (DataGrid) this.Component; if (e.Component == d.DataSource) d.DataSource = null; } protected override void Dispose(bool disposing) { if (disposing) { if (changeNotificationService != null) changeNotificationService.ComponentRemoved -= new ComponentEventHandler(DataSource_ComponentRemoved); } base.Dispose(disposing); } ///Initializes a new instance of the ///class. /// /// public override DesignerVerbCollection Verbs { get { return designerVerbs; } } ///Gets the design-time verbs supported by the component associated with the /// designer. ////// /// [ SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes") // See comment inside the method about ignoring errors. ] private void OnAutoFormat(object sender, EventArgs e) { object o = Component; DataGrid dgrid = o as DataGrid; Debug.Assert(dgrid != null, "DataGrid expected."); DataGridAutoFormatDialog dialog = new DataGridAutoFormatDialog(dgrid); if (dialog.ShowDialog() == DialogResult.OK) { DataRow selectedData = dialog.SelectedData; IDesignerHost host = (IDesignerHost)GetService(typeof(IDesignerHost)); DesignerTransaction trans = host.CreateTransaction(SR.GetString(SR.DataGridAutoFormatUndoTitle, Component.Site.Name)); try { if (selectedData != null) { PropertyDescriptorCollection gridProperties = TypeDescriptor.GetProperties(typeof(DataGrid)); foreach (DataColumn c in selectedData.Table.Columns) { object value = selectedData[c]; PropertyDescriptor prop = gridProperties[c.ColumnName]; if (prop != null) { if (Convert.IsDBNull(value) || value.ToString().Length == 0) { prop.ResetValue(dgrid); } else { try { TypeConverter converter = prop.Converter; object convertedValue = converter.ConvertFromString(value.ToString()); prop.SetValue(dgrid, convertedValue); } catch { // Ignore errors... the only one we really care about is Font names. // The TypeConverter will throw if the font isn't on the user's machine } } } } } } finally { trans.Commit(); } // now invalidate the grid dgrid.Invalidate(); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.Raises the AutoFormat event. ///
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