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//------------------------------------------------------------------------------
// <copyright file="LoginName.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System.ComponentModel;
using System.Globalization;
using System.Web;
using System.Web.UI;
using System.Web.Util;
/// <devdoc>
/// Renders a Label containing the name of the current user, as defined by the FormatString property.
/// Renders nothing if the current user is anonymous.
/// </devdoc>
[
Bindable(false),
Designer("System.Web.UI.Design.WebControls.LoginNameDesigner," + AssemblyRef.SystemDesign),
DefaultProperty("FormatString")
]
public class LoginName : WebControl {
private const string _defaultFormatString = "{0}";
/// <devdoc>
/// The format specification. {0} is replaced with the user name of the logged in user.
/// </devdoc>
[
WebCategory("Appearance"),
DefaultValue(_defaultFormatString),
Localizable(true),
WebSysDescription(SR.LoginName_FormatString)
]
public virtual string FormatString {
get {
object obj = ViewState["FormatString"];
return (obj == null) ? _defaultFormatString : (string) obj;
}
set {
ViewState["FormatString"] = value;
}
}
public override bool SupportsDisabledAttribute {
get {
return RenderingCompatibility < VersionUtil.Framework40;
}
}
internal string UserName {
get {
if (DesignMode) {
return SR.GetString(SR.LoginName_DesignModeUserName);
}
else {
return LoginUtil.GetUserName(this);
}
}
}
protected internal override void Render(HtmlTextWriter writer) {
if (!String.IsNullOrEmpty(UserName)) {
base.Render(writer);
}
}
public override void RenderBeginTag(HtmlTextWriter writer) {
// Needed for adapter case to prevent empty span tags
if (!String.IsNullOrEmpty(UserName)) {
base.RenderBeginTag(writer);
}
}
public override void RenderEndTag(HtmlTextWriter writer) {
// Needed for adapter case to prevent empty span tags
if (!String.IsNullOrEmpty(UserName)) {
base.RenderEndTag(writer);
}
}
/// <devdoc>
/// Styles would be rendered by the WebControl base class.
/// </devdoc>
protected internal override void RenderContents(HtmlTextWriter writer) {
string userName = UserName;
if (!String.IsNullOrEmpty(userName)) {
// VSWhidbey 304890 HTMLEncode the username
userName = HttpUtility.HtmlEncode(userName);
string formatString = FormatString;
if (formatString.Length == 0) {
writer.Write(userName);
}
else {
try {
writer.Write(String.Format(CultureInfo.CurrentCulture, formatString, userName));
}
catch (FormatException e) {
throw new FormatException(SR.GetString(SR.LoginName_InvalidFormatString), e);
}
}
}
}
}
}
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