requiredfieldvalidator在updatepanel内部无法正常工作 [英] requiredfieldvalidator not working inside updatepanel

问题描述

我正在网格视图外部的外部按钮创建网格视图中的新行，动态创建下拉列表并验证它。它曾经工作正常，直到我在更新面板中移动网格视图。



有没有办法验证UpdatePanel中的下拉列表？



这是我到目前为止的代码：

 DropDownList ddlEmployeeName1 =  new  DropDownList（）; 
 
 ddlEmployeeName1.ID =   ddlEmployeeName1; 
 ddlEmployeeName1.Attributes.Add（  runat，  server）; 
 ddlEmployeeName1.Width =  200 ; 
 ddlEmployeeName1.ValidationGroup =   valSave; 
 ddlEmployeeName1.CausesValidation =  true ; 
 DropDownList ddlEmployeeRole =  new  DropDownList（）; 
 ddlEmployeeRole.ID =   ddlEmployeeRole; 
 
 ddlEmployeeRole.Attributes.Add（  runat，  server）; 
 
  if （！generic.isRowDataSaved）
 {
  //   e.Row.Cells [1] .Controls.Add（lblEmployeeCode）;  
 e.Row.Cells [ 2 ] Controls.Add被（ddlEmployeeName1）。 
 e.Row.Cells [ 3 ]。Controls.Add（ddlEmployeeRole）;  //  文本框被添加为网格的最后一列 
列表< employeebo> employeeList =  new 列表< employeebo>（）; 
 EmployeeService employeeService =  new  EmployeeService（ this  .ContextBO）; 
 
 lblPoNumberIns1.Text =   PO12345; 
 ddlEmployeeName1.EnableViewState =  true ; 
 ddlEmployeeName1.AppendDataBoundItems =  true ; 
 ddlEmployeeName1.AutoPostBack =  true ; 
 employeeList = employeeService.GetEmployeeList（）;  //  （List< employeebo>）Session [UIConstants.GetEmployeeList] ;  
 ddlEmployeeName1.DataSource = employeeList; 
 ddlEmployeeName1.Items.Add（ new  ListItem（ 请选择EmployeeName，  0））; 
 ddlEmployeeName1.Font.Size = FontUnit.XXSmall; 
 ddlEmployeeName1.Width =  200 ; 
 ddlEmployeeName1.CausesValidation =  true ; 
 ddlEmployeeName1.DataTextField =   EmployeeName; 
 ddlEmployeeName1.DataValueField =   EmployeeOrbitCode; 
 ddlEmployeeName1.DataBind（）; 
 ddlEmployeeName1.Attributes.Add（  onChange， 返回empOrbitCodeUpd（this， + e.Row.RowIndex +  < span class =code-string>）;）; 
 RequiredFieldValidator nameValidator =  new  RequiredFieldValidator（）; 
  if （ddlEmployeeName1.SelectedValue.ToString（）==   0）
 {
 nameValidator.ControlToValidate = ddlEmployeeName1.UniqueID; 
 nameValidator.Attributes.Add（  runat，  server）; 
 
 nameValidator.ErrorMessage =  请选择EmployeeName; 
 nameValidator.Font.Size = FontUnit.XXSmall; 
 nameValidator.ID =   nameValidator; 
 nameValidator.Display = ValidatorDisplay.Dynamic; 
 nameValidator.SetFocusOnError =  true ; 
 nameValidator.ValidationGroup =   valSave; 
 nameValidator.InitialValue =   0; 
 nameValidator.Text =   *; 
 
  this  .Form.Controls.Add（nameValidator）; 
} 

解决方案

使用< scriptmanager> < updatepanel>之外的标记标签

I am creating the new row inside the grid view from external button present outside the grid view with dynamically creating the dropdownlist and validating it. It used to work fine until I have moved the grid view inside the update panel.

Is there any way to validate the dropdownlist inside the UpdatePanel?

Here's my code so far:

DropDownList ddlEmployeeName1 = new DropDownList();

ddlEmployeeName1.ID = "ddlEmployeeName1";
ddlEmployeeName1.Attributes.Add("runat", "server");
ddlEmployeeName1.Width = 200;
ddlEmployeeName1.ValidationGroup = "valSave";
ddlEmployeeName1.CausesValidation = true;
DropDownList ddlEmployeeRole = new DropDownList();
ddlEmployeeRole.ID = "ddlEmployeeRole";

ddlEmployeeRole.Attributes.Add("runat", "server");

if (!generic.isRowDataSaved)
{
    // e.Row.Cells[1].Controls.Add(lblEmployeeCode);
    e.Row.Cells[2].Controls.Add(ddlEmployeeName1);
    e.Row.Cells[3].Controls.Add(ddlEmployeeRole);   //textbox is added as last column of grid
    List<employeebo> employeeList = new List<employeebo>();
    EmployeeService employeeService = new EmployeeService(this.ContextBO);

    lblPoNumberIns1.Text = "PO12345";
    ddlEmployeeName1.EnableViewState = true;
    ddlEmployeeName1.AppendDataBoundItems = true;
    ddlEmployeeName1.AutoPostBack = true;
    employeeList = employeeService.GetEmployeeList();//(List<employeebo>)Session[UIConstants.GetEmployeeList];
    ddlEmployeeName1.DataSource = employeeList;
    ddlEmployeeName1.Items.Add(new ListItem("Please Select EmployeeName", "0"));
    ddlEmployeeName1.Font.Size = FontUnit.XXSmall;
    ddlEmployeeName1.Width = 200;
    ddlEmployeeName1.CausesValidation = true;
    ddlEmployeeName1.DataTextField = "EmployeeName";
    ddlEmployeeName1.DataValueField = "EmployeeOrbitCode";
    ddlEmployeeName1.DataBind();
    ddlEmployeeName1.Attributes.Add("onChange", "return empOrbitCodeUpd(this," + e.Row.RowIndex + ");");
    RequiredFieldValidator nameValidator = new RequiredFieldValidator();
    if (ddlEmployeeName1.SelectedValue.ToString() == "0")
    {
        nameValidator.ControlToValidate = ddlEmployeeName1.UniqueID;
        nameValidator.Attributes.Add("runat", "server");

        nameValidator.ErrorMessage = "Please Select EmployeeName";
        nameValidator.Font.Size = FontUnit.XXSmall;
        nameValidator.ID = "nameValidator";
        nameValidator.Display = ValidatorDisplay.Dynamic;
        nameValidator.SetFocusOnError = true;
        nameValidator.ValidationGroup = "valSave";
        nameValidator.InitialValue = "0";
        nameValidator.Text = "*";

        this.Form.Controls.Add(nameValidator);
     }

解决方案

use the <scriptmanager> tag outside the <updatepanel> tag

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