FileUpload控件上必需的字段验证器 [英] Required Field Validator on FileUpload Control

问题描述

我有一个表单，其中我有两个文本框和一个fileupload控件，我在一个文本框和Fileupload控件上使用必需的字段验证器，当我单击提交按钮时，它显示验证消息但禁用fileupload控件。



我还有第二个取消按钮，点击哪个重定向到上一页，当我点击这个按钮时，它也禁用fileuploadcontrol而不是重定向。以下是我的代码

 <   asp：FileUpload     ID   =  FileUpload1    runat   =  server    /  >  
  <   asp：RequiredFieldValidator     ID   =  rfvFileupload    ValidationGroup   = 验证    runat   =   server  
   
                                                                                            < span class =code-attribute>       ControlToValidate   =  FileUpload1 >  <   / asp：RequiredFieldValidator  >  
 
 
 <   asp：TextBox     ID   =  txtSubj    runat   =  server   >  <   / asp：TextBox  >  < ;   asp：RequiredFieldValidator   
   
                                                                   ID   =  rfvSubject    ControlToValidate   =  txtSubj    runat   =  server   显示  = 动态  
   
                                                  < span class =code-attribute>                 EnableClientScript   =  true    ErrorMessage   =  * required    ValidationGroup   = 验证    /  >  
 
 
 <   asp：按钮    ID   = < span class =code-keyword> btnupload    runat   =  server   文字  = 发送    ValidationGroup   = 验证  
   
                                           OnClick   =  btnupload_Click >  
 <   asp：按钮    ID   =  btncancel    runat   =  server   文字  = 取消    OnClick   =  btncancel_Click  
   
                          < span class =code-attribute>                 /  >  

解决方案

必要的字段验证程序在验证失败时不会禁用任何其他表单控件。试试下面这个样本

 <   asp：FileUpload     ID   =  FileUpload1    runat   =  server    /  >  
 <   asp：RequiredFieldValidator     ID   =  rfvFileupload    ValidationGroup   = 验证    runat   =   server   显示 < span class =code-keyword> = 动态  
  < span class =code-attribute> 
                            < span class =code-attribute>                                                           E. rrorMessage   =  * required    ControlToValidate   =  FileUpload1 < span class =code-keyword>>  <   / asp：RequiredFieldValidator  < span class =code-keyword>>  
 
 
 <   asp：TextBox     ID   =   txtSubj    runat   =  server   >  <   / asp：TextBox  >  
 <   asp：RequiredFieldValidator     ID   =  rfvSubject    ControlToValidate   =  txtSubj    runat   =  server   显示  = 动态  
   
                                                                   EnableClientScript   =  true    ErrorMessage   =  * required < span class =code-attribute>   ValidationGroup   = 验证    /  > ;  
 
 
 <   asp：Button     ID   =  btnupload    runat   =  server   文字  = 发送    ValidationGroup   = 验证    onclick   =  btnupload_Click    /  >  
 <   asp：按钮    ID   =  btncancel    runat   =  server   文字  = 取消    onclick   =  btncancel_Click    /  >  

I have a form in which I have two textboxes and one fileupload control, I am using required field validator on one textbox and on Fileupload control, When I am clicking the submit button, its showing the validation message but disabling the fileupload control.

I also have second button for Cancel, clicking on which redirects to previous page, when I am clicking this button its also disabling the fileuploadcontrol and not redirecting. Below is my code

<asp:FileUpload ID="FileUpload1" runat="server" />
 <asp:RequiredFieldValidator ID="rfvFileupload" ValidationGroup="validate" runat="server"

                                                ControlToValidate="FileUpload1"></asp:RequiredFieldValidator>


  <asp:TextBox ID="txtSubj" runat="server" ></asp:TextBox><asp:RequiredFieldValidator

                                ID="rfvSubject" ControlToValidate="txtSubj" runat="server" Display="Dynamic"

                                EnableClientScript="true" ErrorMessage="* required" ValidationGroup="validate" />


<asp:Button ID="btnupload" runat="server" Text="Send" ValidationGroup="validate"

                    OnClick="btnupload_Click">
                <asp:Button ID="btncancel" runat="server" Text="Cancel" OnClick="btncancel_Click"

                    />

解决方案

Required field validator does not disable any other form controls when it fails the validation. Try this below sample

<asp:FileUpload ID="FileUpload1" runat="server" />
        <asp:RequiredFieldValidator ID="rfvFileupload" ValidationGroup="validate" runat="server" Display="Dynamic"

                                          ErrorMessage="* required" ControlToValidate="FileUpload1"></asp:RequiredFieldValidator>


        <asp:TextBox ID="txtSubj" runat="server" ></asp:TextBox>
        <asp:RequiredFieldValidator ID="rfvSubject" ControlToValidate="txtSubj" runat="server" Display="Dynamic"

                                EnableClientScript="true" ErrorMessage="* required" ValidationGroup="validate" />


        <asp:Button ID="btnupload" runat="server" Text="Send" ValidationGroup="validate" onclick="btnupload_Click" />
        <asp:Button ID="btncancel" runat="server" Text="Cancel" onclick="btncancel_Click" />

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