Enable Required Field Validation In Only One Button Click

Question

i am developing application in asp.net c#, in that i have a problem . the problem is i have three fields in a asp.net page, in that it having Bank Name, Branch, and IFSC Code, these three is mandatory to fill when i click save button,

but when i click search & clear button also it should ask to fill these fields. how to restrict this when click other buttons

"please fill in this field"..

suppose if i search sbi bank only, it asks to enter every field.

MY CODE Enter Bank

          </div>
          <div class="form-group col-md-3">
            <label for="exampleInputEmail1">
               Enter Branch</label>
           <asp:TextBox ID="txtBranchName" runat="server" type="text" CssClass="form-control" PlaceHolder="Enter Branch" required />

          </div>
         <div class="form-group col-md-3">
            <label for="exampleInputEmail1">
               Enter IFSC Code</label>
               <asp:TextBox ID="txtIFSCCode" runat="server" type="text" CssClass="form-control" PlaceHolder="Enter IFSC Code" required />
          </div>
          </td>
        </tr>
     </table>
        <br />
        <br />
<table border="0px" cellpadding="4px" cellspacing="4px" align="center" width="180px">
    <tr>
      <td>
        <asp:Button ID="btnSave" runat="server" ValidationGroup="valInsert" Text="Save" OnClick="btnSave_Click" ToolTip="Save" CssClass="btn btn-success" />
      </td>
      <td>
     <asp:Button ID="btnClear" runat="server" Text="Clear" OnClick="btnClear_Click" ToolTip="Clear / Refresh" CssClass="btn btn-default" />
      </td>
<td>
  <asp:Button ID="btnSearch" runat="server" ValidationGroup="valInsert" Text="Search" OnClick="btnSearch_Click" ToolTip="Search" CssClass="btn btn-success" /></td>
    <td>
 <asp:Button ID="btnPrint" runat="server" Text="Print" OnClientClick="return PrintPanel();" ToolTip="Print" CssClass="btn btn-default" />
   </td>
 </tr>
</table>

Answer 1

Try to put formnovalidate in your search button code

<asp:Button ID="btnSearch" runat="server" Text="Search" OnClick="btnSearch_Click" ToolTip="Search" CssClass="btn btn-success" formnovalidate  />