我已将链接按钮和标签的 enableviewstate 属性设置为 true。还在页面加载事件处理程序中的回发上重新生成相同的按钮。但我无法调用链接按钮的 onclick 事件处理程序。你能告诉我代码有什么问题吗？
公共部分类_默认：System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) {
List<LinkButton> listOfLinkButton = Session["ListOfLinkButton"] as List<LinkButton>;
List<Label> listOfLabel = Session["ListOfLabel"] as List<Label>;
if(listOfLabel!=null && listOfLinkButton!=null)
{
for (int i = 0; i < listOfLinkButton.Count; i++)
{
PlaceHolder1.Controls.Add(listOfLinkButton[i]);
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
PlaceHolder1.Controls.Add(listOfLabel[i]);
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
}
}
}
protected void LinkButton_Click(object sender, EventArgs e)
{
LinkButton linkButton = sender as LinkButton;
Response.Redirect(linkButton.Attributes["LinkUrl"]);
}
protected void Button1_Click1(object sender, EventArgs e)
{
List<LinkButton> listOfLinkButton = new List<LinkButton>();
List<Label> listOfLabel = new List<Label>();
Rss rssDocumentObj = RssFileReader.GetRssDocumentData(TextBox1.Text);
for (int j = 0; j < rssDocumentObj.ListOfChannel.Count; j++)
{
LinkButton linkButton = new LinkButton();
linkButton.ID = "LinkButtonForChannelDynamicInPlaceHolder1Id" + j;
linkButton.EnableViewState = true;
linkButton.ForeColor = Color.Blue;
linkButton.Font.Bold = true;
linkButton.Font.Size = 18;
linkButton.Font.Underline = true;
linkButton.Text = rssDocumentObj.ListOfChannel[j].ChannelTitle.InnerText;
linkButton.Click += new EventHandler(LinkButton_Click);
linkButton.Attributes.Add("LinkUrl", rssDocumentObj.ListOfChannel[j].ChannelLink.InnerText);
linkButton.Attributes.Add("onmouseover", "this.style.color = '#006699'");
linkButton.Attributes.Add("onmouseout", "this.style.color = '#0000ff'");
PlaceHolder1.Controls.Add(linkButton);
listOfLinkButton.Add(linkButton);
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
Label label = new Label();
label.ID = "LabelForChannelDynamicInPlaceHolder1Id" + j;
label.EnableViewState = true;
label.ForeColor = Color.DarkSlateGray;
label.Text = rssDocumentObj.ListOfChannel[j].ChannelDescription.InnerText;
PlaceHolder1.Controls.Add(label);
listOfLabel.Add(label);
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
for (int i = 0; i < rssDocumentObj.ListOfChannel[j].ListOfItem.Count; i++)
{
LinkButton linkButtonForItem = new LinkButton();
linkButtonForItem.ID = "LinkButtonDynamicInPlaceHolder1Id" + j + " " + i;
linkButtonForItem.EnableViewState = true;
linkButtonForItem.ForeColor = Color.Blue;
linkButtonForItem.Font.Bold = true;
linkButtonForItem.Font.Size = 14;
linkButtonForItem.Font.Underline = false;
linkButtonForItem.Text = rssDocumentObj.ListOfChannel[j].ListOfItem[i].ItemTitle.InnerText;
linkButtonForItem.Click += new EventHandler(LinkButton_Click);
linkButtonForItem.Attributes.Add("LinkUrl", rssDocumentObj.ListOfChannel[j].ListOfItem[i].ItemLink.InnerText);
linkButtonForItem.Attributes.Add("onmouseover", "this.style.color = '#006699'");
linkButtonForItem.Attributes.Add("onmouseout", "this.style.color = '#0000ff'");
PlaceHolder1.Controls.Add(linkButtonForItem);
listOfLinkButton.Add(linkButtonForItem);
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
Label labelForItem = new Label();
labelForItem.ID = "LabelDynamicInPlaceHolder1Id" + i;
labelForItem.EnableViewState = true;
labelForItem.ForeColor = Color.DarkGray;
labelForItem.Text = rssDocumentObj.ListOfChannel[j].ListOfItem[i].ItemDescription.InnerText;
PlaceHolder1.Controls.Add(labelForItem);
listOfLabel.Add(labelForItem);
PlaceHolder1.Controls.Add(new LiteralControl("<br />"));
Session["ListOfLinkButton"] = listOfLinkButton;
Session["ListOfLabel"] = listOfLabel;
}
}
}
}