Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / HyperLinkColumn.cs / 1 / HyperLinkColumn.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.ComponentModel; using System.Globalization; using System.Web; using System.Web.UI; using System.Security.Permissions; using System.Web.Util; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class HyperLinkColumn : DataGridColumn { private PropertyDescriptor textFieldDesc; private PropertyDescriptor urlFieldDesc; ///Creates a column within the ///containing hyperlinks that /// navigate to specified URLs. /// public HyperLinkColumn() { } ///Initializes a new instance of the ///class. /// [ WebCategory("Data"), DefaultValue(""), WebSysDescription(SR.HyperLinkColumn_DataNavigateUrlField) ] public virtual string DataNavigateUrlField { get { object o = ViewState["DataNavigateUrlField"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["DataNavigateUrlField"] = value; OnColumnChanged(); } } ///Gets or sets the field in the DataSource that provides the URL of the page to navigate to. ////// [ WebCategory("Data"), DefaultValue(""), DescriptionAttribute("The formatting applied to the value bound to the NavigateUrl property.") ] public virtual string DataNavigateUrlFormatString { get { object o = ViewState["DataNavigateUrlFormatString"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["DataNavigateUrlFormatString"] = value; OnColumnChanged(); } } ///Gets or sets the formatting applied to the ////// property. /// [ WebCategory("Data"), DefaultValue(""), WebSysDescription(SR.HyperLinkColumn_DataTextField) ] public virtual string DataTextField { get { object o = ViewState["DataTextField"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["DataTextField"] = value; OnColumnChanged(); } } ///Gets or sets the field in the DataSource that will be used as the source of /// data for the ///property. /// [ WebCategory("Data"), DefaultValue(""), DescriptionAttribute("The formatting applied to the value bound to the Text property.") ] public virtual string DataTextFormatString { get { object o = ViewState["DataTextFormatString"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["DataTextFormatString"] = value; OnColumnChanged(); } } ///Gets or sets the formatting applied to the ////// property. /// [ WebCategory("Behavior"), DefaultValue(""), UrlProperty(), WebSysDescription(SR.HyperLinkColumn_NavigateUrl) ] public virtual string NavigateUrl { get { object o = ViewState["NavigateUrl"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["NavigateUrl"] = value; OnColumnChanged(); } } ///Gets or sets the URL to navigate to when the hyperlink is clicked. ////// [ WebCategory("Behavior"), DefaultValue(""), TypeConverter(typeof(TargetConverter)), WebSysDescription(SR.HyperLink_Target) ] public virtual string Target { get { object o = ViewState["Target"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["Target"] = value; OnColumnChanged(); } } ///Gets or sets the window or target frame that is /// used to display the contents resulting from the hyperlink. ////// [ Localizable(true), WebCategory("Appearance"), DefaultValue(""), WebSysDescription(SR.HyperLinkColumn_Text) ] public virtual string Text { get { object o = ViewState["Text"]; if (o != null) return(string)o; return String.Empty; } set { ViewState["Text"] = value; OnColumnChanged(); } } ///Gets or sets the text to display for the hyperlink. ////// protected virtual string FormatDataNavigateUrlValue(object dataUrlValue) { string formattedUrlValue = String.Empty; if (!DataBinder.IsNull(dataUrlValue)) { string formatting = DataNavigateUrlFormatString; if (formatting.Length == 0) { formattedUrlValue = dataUrlValue.ToString(); } else { formattedUrlValue = String.Format(CultureInfo.CurrentCulture, formatting, dataUrlValue); } } return formattedUrlValue; } ////// protected virtual string FormatDataTextValue(object dataTextValue) { string formattedTextValue = String.Empty; if (!DataBinder.IsNull(dataTextValue)) { string formatting = DataTextFormatString; if (formatting.Length == 0) { formattedTextValue = dataTextValue.ToString(); } else { formattedTextValue = String.Format(CultureInfo.CurrentCulture, formatting, dataTextValue); } } return formattedTextValue; } ////// public override void Initialize() { base.Initialize(); textFieldDesc = null; urlFieldDesc = null; } ////// public override void InitializeCell(TableCell cell, int columnIndex, ListItemType itemType) { base.InitializeCell(cell, columnIndex, itemType); if ((itemType != ListItemType.Header) && (itemType != ListItemType.Footer)) { HyperLink hyperLink = new HyperLink(); hyperLink.Text = Text; hyperLink.NavigateUrl = NavigateUrl; hyperLink.Target = Target; if ((DataNavigateUrlField.Length != 0) || (DataTextField.Length != 0)) { hyperLink.DataBinding += new EventHandler(this.OnDataBindColumn); } cell.Controls.Add(hyperLink); } } ////// Initializes the cell representing this column with the /// contained hyperlink. ////// private void OnDataBindColumn(object sender, EventArgs e) { Debug.Assert((DataTextField.Length != 0) || (DataNavigateUrlField.Length != 0), "Shouldn't be DataBinding without a DataTextField and DataNavigateUrlField"); HyperLink boundControl = (HyperLink)sender; DataGridItem item = (DataGridItem)boundControl.NamingContainer; object dataItem = item.DataItem; if ((textFieldDesc == null) && (urlFieldDesc == null)) { PropertyDescriptorCollection props = TypeDescriptor.GetProperties(dataItem); string fieldName; fieldName = DataTextField; if (fieldName.Length != 0) { textFieldDesc = props.Find(fieldName, true); if ((textFieldDesc == null) && !DesignMode) { throw new HttpException(SR.GetString(SR.Field_Not_Found, fieldName)); } } fieldName = DataNavigateUrlField; if (fieldName.Length != 0) { urlFieldDesc = props.Find(fieldName, true); if ((urlFieldDesc == null) && !DesignMode) { throw new HttpException(SR.GetString(SR.Field_Not_Found, fieldName)); } } } if (textFieldDesc != null) { object data = textFieldDesc.GetValue(dataItem); string dataValue = FormatDataTextValue(data); boundControl.Text = dataValue; } else if (DesignMode && (DataTextField.Length != 0)) { boundControl.Text = SR.GetString(SR.Sample_Databound_Text); } if (urlFieldDesc != null) { object data = urlFieldDesc.GetValue(dataItem); string dataValue = FormatDataNavigateUrlValue(data); boundControl.NavigateUrl = dataValue; } else if (DesignMode && (DataNavigateUrlField.Length != 0)) { boundControl.NavigateUrl = "url"; } } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ScriptIgnoreAttribute.cs
- SafeArrayRankMismatchException.cs
- LongTypeConverter.cs
- DataServiceHostWrapper.cs
- QuaternionAnimation.cs
- DataGridViewCellEventArgs.cs
- PieceDirectory.cs
- TrustLevelCollection.cs
- HeaderLabel.cs
- WasHttpModulesInstallComponent.cs
- RefreshEventArgs.cs
- WindowsUpDown.cs
- Property.cs
- AlphaSortedEnumConverter.cs
- X509Chain.cs
- TextParagraphCache.cs
- DataPagerCommandEventArgs.cs
- DataServicePagingProviderWrapper.cs
- CodeTryCatchFinallyStatement.cs
- RegexCompilationInfo.cs
- GenericWebPart.cs
- VoiceSynthesis.cs
- ColorMap.cs
- ManagementEventArgs.cs
- EntityDataSourceDataSelectionPanel.cs
- DefaultBindingPropertyAttribute.cs
- PieceDirectory.cs
- SslStream.cs
- DropSourceBehavior.cs
- TemplateControl.cs
- BooleanExpr.cs
- SplineKeyFrames.cs
- FlowDecision.cs
- DependencyObjectProvider.cs
- TripleDES.cs
- DefaultValueConverter.cs
- DataRowExtensions.cs
- TextTreePropertyUndoUnit.cs
- CodeMemberEvent.cs
- ControllableStoryboardAction.cs
- HebrewCalendar.cs
- Debugger.cs
- AbandonedMutexException.cs
- XamlPoint3DCollectionSerializer.cs
- HtmlInputPassword.cs
- OracleException.cs
- ContentHostHelper.cs
- MultiView.cs
- FieldToken.cs
- ValidatorCompatibilityHelper.cs
- PropertyCondition.cs
- ActiveDocumentEvent.cs
- DataControlCommands.cs
- PageSetupDialog.cs
- WebPartManagerDesigner.cs
- SecurityElement.cs
- HtmlGenericControl.cs
- HttpCacheParams.cs
- SqlPersonalizationProvider.cs
- FontDifferentiator.cs
- PageStatePersister.cs
- NumericUpDownAccelerationCollection.cs
- BitmapEffectDrawing.cs
- ConstraintEnumerator.cs
- CoTaskMemHandle.cs
- URLBuilder.cs
- BmpBitmapDecoder.cs
- DataGridViewCellStateChangedEventArgs.cs
- DecimalFormatter.cs
- TreeNode.cs
- Documentation.cs
- WebPart.cs
- HTMLTextWriter.cs
- DoubleStorage.cs
- IndependentlyAnimatedPropertyMetadata.cs
- SimpleTextLine.cs
- SystemWebCachingSectionGroup.cs
- ScriptReference.cs
- serverconfig.cs
- TemplatePagerField.cs
- SQLString.cs
- ImmComposition.cs
- HitTestDrawingContextWalker.cs
- CodeTypeDelegate.cs
- ApplicationDirectoryMembershipCondition.cs
- DesignerObjectListAdapter.cs
- TextShapeableCharacters.cs
- UnsafeNativeMethods.cs
- securitycriticaldataClass.cs
- CheckBoxAutomationPeer.cs
- Hyperlink.cs
- MessageBox.cs
- XamlStyleSerializer.cs
- MimeParameterWriter.cs
- DBDataPermission.cs
- XmlBoundElement.cs
- SendSecurityHeader.cs
- MergeFilterQuery.cs
- ListSortDescription.cs
- SmiEventSink.cs