一年多前，Insus.NET有写过一篇 《对象失去焦点时自己动提交数据》，那一篇是依赖Linkbutton来做隐藏提交。是否有不用依赖Linkbutton方法呢？ 答案是肯定的。
.aspx页只拉一个TextBox控件：
View Code 
1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
2
3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5 <html xmlns="http://www.w3.org/1999/xhtml">
6 <head runat="server">
7 <title></title>
8 </head>
9 <body>
10 <form id="form1" runat="server">
11 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
12 </form>
13 </body>
14 </html>
2
3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5 <html xmlns="http://www.w3.org/1999/xhtml">
6 <head runat="server">
7 <title></title>
8 </head>
9 <body>
10 <form id="form1" runat="server">
11 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
12 </form>
13 </body>
14 </html>
.aspx.cs页中，首选在Page_Init事件，为TextBox注册OnBlur事件：
View Code protected void Page_Init(object sender, EventArgs e)
{
this.TextBox1.Attributes.Add("onblur", Page.ClientScript.GetPostBackEventReference(this.TextBox1, "OnBlur"));
}
{
this.TextBox1.Attributes.Add("onblur", Page.ClientScript.GetPostBackEventReference(this.TextBox1, "OnBlur"));
}
写一个onBlue事件，将替代LinkButton的Click事件：
View Code private void OnBlurHandle(string ctrl, string args)
{
if (ctrl == this.TextBox1.UniqueID && args == "OnBlur")
{
//这里写提交到数据库中
}
}
{
if (ctrl == this.TextBox1.UniqueID && args == "OnBlur")
{
//这里写提交到数据库中
}
}
然后在网页的Page_Load事件，判断是否IsPostBack。
View Code protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
var ctrl = Request.Params[Page.postEventSourceID];
var args = Request.Params[Page.postEventArgumentID];
OnBlurHandle(ctrl, args);
}
}
{
if (IsPostBack)
{
var ctrl = Request.Params[Page.postEventSourceID];
var args = Request.Params[Page.postEventArgumentID];
OnBlurHandle(ctrl, args);
}
}