Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / TableHeaderCell.cs / 1 / TableHeaderCell.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- // TableHeaderCell.cs // namespace System.Web.UI.WebControls { using System; using System.Text; using System.ComponentModel; using System.Globalization; using System.Web; using System.Web.UI; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class TableHeaderCell : TableCell { ///Encapsulates /// a header cell within a table. ////// public TableHeaderCell() : base(HtmlTextWriterTag.Th) { } ////// Initializes a new instance of the ///class. /// /// [ WebCategory("Accessibility"), DefaultValue(""), WebSysDescription(SR.TableHeaderCell_AbbreviatedText) ] public virtual string AbbreviatedText { get { object x = ViewState["AbbrText"]; return((x == null) ? String.Empty : (string)x); } set { ViewState["AbbrText"] = value; } } ////// Sets the abbreviated text for a header cell. The abbreviated text /// is rendered with the HTML ABBR attribute. The ABBR attribute is important /// for screen readers since it allows them to read a shortened version of a header for each cell in the table. /// ////// [ WebCategory("Accessibility"), DefaultValue(TableHeaderScope.NotSet), WebSysDescription(SR.TableHeaderCell_Scope) ] public virtual TableHeaderScope Scope { get { object x = ViewState["Scope"]; return((x == null) ? TableHeaderScope.NotSet : (TableHeaderScope)x); } set { ViewState["Scope"] = value; } } ////// Represents the cells that the header applies to. Renders the HTML scope attribute. Possible values are from the TableHeaderScope enumeration: Column and Row. /// ////// [ DefaultValue(null), TypeConverterAttribute(typeof(StringArrayConverter)), WebCategory("Accessibility"), WebSysDescription(SR.TableHeaderCell_CategoryText) ] public virtual string[] CategoryText { get { object x = ViewState["CategoryText"]; return (x != null) ? (string[])((string[])x).Clone() : new string[0]; } set { if (value != null) { ViewState["CategoryText"] = (string[])value.Clone(); } else { ViewState["CategoryText"] = null; } } } ////// Contains a list of categories associated with the table header (read by screen readers). The categories can be any string values. The categories are rendered as a comma delimited list using the HTML axis attribute. /// ////// /// protected override void AddAttributesToRender(HtmlTextWriter writer) { base.AddAttributesToRender(writer); TableHeaderScope scope = Scope; if (scope != TableHeaderScope.NotSet) { writer.AddAttribute(HtmlTextWriterAttribute.Scope, scope.ToString().ToLowerInvariant()); } String abbr = AbbreviatedText; if (!String.IsNullOrEmpty(abbr)) { writer.AddAttribute(HtmlTextWriterAttribute.Abbr, abbr); } string[] arr = CategoryText; if (arr.Length > 0) { bool first = true; StringBuilder builder = new StringBuilder(); foreach (string s in arr) { if (first) { first = false; } else { builder.Append(","); } builder.Append(s); } string val = builder.ToString(); if (!String.IsNullOrEmpty(val)) { writer.AddAttribute(HtmlTextWriterAttribute.Axis, val); } } } } }Adds header cell attributes to the list of attributes to render. ///
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