如何使用Asp.net在按钮单击上使用服务器端验证

Question

I have 2 buttons on my page and i want to validate only on btnSubmit click. However i don't want to validate if user clicks the btnSave button. I have several text-boxes that i need to validate..

 <asp:TextBox ID="txt1" runat="server" CssClass="form-control"></asp:TextBox>
  <asp:RequiredFieldValidator ErrorMessage="** Required **" ForeColor="Red" ControlToValidate="txt1" runat="server" Display="Dynamic" />

here is the button save

<asp:LinkButton ID="linkSave" runat="server" CssClass="btn btn-primary btn-block" OnClick="btn_Save_Click"> 
<i aria-hidden="true" class="glyphicon glyphicon-ok"></i>Save

here is the button submit

 <asp:LinkButton ID="linkSubmit" runat="server" CssClass="btn btn-primary btn-block" OnClick="btn_Submit_Click"> 
    <i aria-hidden="true" class="glyphicon glyphicon-ok"></i>Submit

Answer 1

Set CauseValidation = "False" on all the buttons you don't want to trigger validation, including LinkButtons

<asp:LinkButton ID="linkSave" runat="server" CauseValidation="False" />

If you want different validations per button, then use the ValidationGroup="GroupName" attribute on the button and all the controls participating in that validation (associated to that button)

Answer 2

Use validation groups.

This allows you to make one button enforce validation (btnSubmit) but the other not (btnSave).

Answer 3

you can use group validation

<asp:TextBox ID="txt1" runat="server" CssClass="form-control"></asp:TextBox>
  <asp:RequiredFieldValidator ID="RequiredFieldValidator1" validationgroup="validTxT1Group" ErrorMessage="** Required **" ForeColor="Red" ControlToValidate="txt1" runat="server" Display="Dynamic" />

<asp:LinkButton ID="linkSave" runat="server" CssClass="btn btn-primary btn-block" CausesValidation="false" OnClick="btn_Save_Click"> 
<i aria-hidden="true" class="glyphicon glyphicon-ok"></i>Save

<asp:LinkButton ID="linkSubmit" runat="server" CssClass="btn btn-primary btn-block" CausesValidation="true" ValidationGroup="validTxT1Group" OnClick="btn_Submit_Click"> 
    <i aria-hidden="true" class="glyphicon glyphicon-ok"></i>Submit