protected override void RenderPreText(System.Web.UI.HtmlTextWriter writer)
{
if (!ShowCheckBox.HasValue || !ShowCheckBox.Value)
{
writer.WriteBeginTag("input");
writer.WriteAttribute("type", "checkbox");
if (Checked)
{
writer.WriteAttribute("checked", "checked");
}
writer.WriteAttribute("disabled", "disabled");
writer.WriteEndTag("");
}
base.RenderPostText(writer);
}
预期效果也达到了,可惜的Postback的时候这个checkbox就丢失了help
protected override void Render(System.Web.UI.HtmlTextWriter writer)
{
还有TreeNode里似乎没有Render的虚函数。。
我晕,是在重写treenode类?
{
TreeView tv = new TreeView();
mTreeNode tn = new mTreeNode();
tn.Text = "1";
tv.Nodes.Add(tn);
Form.Controls.Add(tv);
}
protected void Button1_Click(object sender, EventArgs e)
{ }
class mTreeNode : TreeNode
{
protected override void RenderPreText(System.Web.UI.HtmlTextWriter writer)
{
writer.WriteBeginTag("input");
writer.WriteAttribute("type", "checkbox");
writer.WriteAttribute("checked", "checked");
writer.WriteAttribute("disabled", "disabled");
writer.WriteEndTag("");
base.RenderPostText(writer);
}
}
我把if去掉了。我测试怎么正常?