防止前端重复提交表单

在加载时添加下面两条语句

protected void Page_Load(object sender, EventArgs e)

{

if (!Page.IsPostBack)

{

#region 遮罩按钮

this.Download.Attributes.Add(" onclick ", ClientScript.GetPostBackEventReference

(Download, " Click ") + " ;this.disabled=true; this.value=‘同步中…’; “);

this.btnImport.Attributes.Add(” onclick ", ClientScript.GetPostBackEventReference

(btnImport, " Click ") + " ;this.disabled=true; this.value=‘上传中…’;");

#endregion

}

}