ASP.NET程序中常用的三十三种代码(强荐)!

1. 打开新的窗口并传送参数:

response.write("<script>window.open(' *.aspx?id="+this.DropDownList1.SelectIndex+"&id1="+...+"')</script>")

接收参数:

string a = Request.QueryString("id");
string b = Request.QueryString("id1");

 2.为按钮添加对话框

  Button1.Attributes.Add("onclick", "return confirm('确认?')");
  Button1.Attributes.Add("onclick", "if(confirm('are you sure...?')) {  return true; }  else { return false; }")

3.删除表格选定记录

int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString()

 4.删除表格记录警告

  private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e)
  {
    switch(e.Item.ItemType)
    {
      case ListItemType.Item :
      case ListItemType.AlternatingItem :
      case ListItemType.EditItem:
     {
          TableCell myTableCell;
       myTableCell = e.Item.Cells[14];
      
    LinkButton myDeleteButton ;
       myDeleteButton = (LinkButton)myTableCell.Controls[0];

       myDeleteButton.Attributes.Add("onclick","return confirm(’您是否确定要删除这条信息’);");
      
    break;
  }
 
 default:
       break;
    }
  }


5.点击表格行链接另一页

  private void grdCustomer_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
     //点击表格打开
     if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
   e.Item.Attributes.Add("onclick","window.open(’Default.aspx?id=" + e.Item.Cells[0].Text + "’);");
  }

6.获取错误信息并到指定页面

不要使用Response.Redirect,而应该使用Server.Transfer
e.g

// in global.asax
protected void Application_Error(Object sender, EventArgs e)
{
   if (Server.GetLastError() is HttpUnhandledException)
 Server.Transfer("MyErrorPage.aspx");

   //其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了
}

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