MOSS中Button事件输出二进制流后无法再次相应按钮事件的解决办法

 protected void Page_Load(object sender, EventArgs e) { RepairCallBack()； }private void RepairCallBack() { string beforeSubmitJS = "/nvar exportRequested = false; /n"; beforeSubmitJS += "var beforeFormSubmitFunction = theForm.onsubmit;/n"; beforeSubmitJS += "theForm.onsubmit = function(){ /n"; beforeSubmitJS += "var returnVal = beforeFormSubmitFunction(); /n"; beforeSubmitJS += "if(exportRequested && returnVal) {_spFormOnSubmitCalled=false; exportRequested=false;} /n"; beforeSubmitJS += "return returnVal; /n"; beforeSubmitJS += "}; /n"; this.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "alterFormSubmitEvent", beforeSubmitJS, true); butExport.Attributes["onclick"] = "javascript:exportRequested=true;"; }

butExport为输出二进制流的按钮