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//------------------------------------------------------------------------------
// <copyright file="ErrorWebPart.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls.WebParts {
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Globalization;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Util;
[
ToolboxItem(false)
]
public class ErrorWebPart : ProxyWebPart, ITrackingPersonalizable {
private string _errorMessage;
// No constructor that takes a WebPart, since we ony use the ErrorWebPart when the original
// WebPart could not be instantiated.
public ErrorWebPart(string originalID, string originalTypeName, string originalPath, string genericWebPartID) :
base(originalID, originalTypeName, originalPath, genericWebPartID) {
}
public string ErrorMessage {
get {
return (_errorMessage != null) ? _errorMessage : String.Empty;
}
set {
_errorMessage = value;
}
}
protected override void AddAttributesToRender(HtmlTextWriter writer) {
WebPartZoneBase zone = Zone;
if (zone != null && !zone.ErrorStyle.IsEmpty) {
zone.ErrorStyle.AddAttributesToRender(writer, this);
}
base.AddAttributesToRender(writer);
}
// Can be overridden by derived classes to set properties
protected virtual void EndLoadPersonalization() {
// We don't really need to set AllowEdit, since EditorPart.Display has
// a special case for ErrorWebPart. However, let's set it to false anyway
// for consistency.
AllowEdit = false;
// We want to force the user to see the ErrorWebPart, and we don't want to allow
// them to hide or minimize it.
ChromeState = PartChromeState.Normal;
Hidden = false;
AllowHide = false;
AllowMinimize = false;
// There is no reason to allow exporting an ErrorWebPart.
ExportMode = WebPartExportMode.None;
// We never call IsAuthorized() on ErrorWebParts, so there is no reason for
// AuthorizationFilter to be set.
AuthorizationFilter = String.Empty;
}
protected internal override void RenderContents(HtmlTextWriter writer) {
string errorMessage = ErrorMessage;
if (!String.IsNullOrEmpty(errorMessage)) {
writer.WriteEncodedText(SR.GetString(SR.ErrorWebPart_ErrorText, errorMessage));
}
}
#region ITrackingPersonalizable implementation
// It doesn't really matter what we return from this property, since this codepath will
// never be reached for the ErrorWebPart. However, we return true since we will never need
// the framework to diff our properties.
bool ITrackingPersonalizable.TracksChanges {
get {
return true;
}
}
void ITrackingPersonalizable.BeginLoad() {
}
void ITrackingPersonalizable.BeginSave() {
}
void ITrackingPersonalizable.EndLoad() {
EndLoadPersonalization();
}
void ITrackingPersonalizable.EndSave() {
}
#endregion
}
}
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