.net前台js触发后台事件

使下拉框不触发window.onbeforeunload

Js:

window.onbeforeunload = function() {

if (document.getElementById("Hidden1").value == "") {

window.event.returnValue = "确定要离开,放弃保存？";

}

}

function test() {

document.getElementById("Hidden1").value = "1";

}

onchange="ToBehindFunction()">

售前立项

售后立项

商务立项

前台js触发后台事件

上面Select的onchange="ToBehindFunction()"

function ToBehindFunction()

{

document.getElementById("Submit1").click();

}

后台

protected void Submit1_ServerClick(object sender, EventArgs e)

{

this.sourceProject.SelectParameters["condition"].DefaultValue = "Plid='" +

this.DropDownList2.Value + "'";

this.ddlProject.DataBind();

string aa = this.ddlProject.Text;

if (this.ddlProject.Text != "")

{

this.DropDownList1.SelectedValue = (new

ProjectService()).GetProjectById(int.Parse(this.ddlProject.SelectedValue)).State.ToString ();

}

else

{

this.DropDownList1.SelectedValue = "3"; }

}