how to validate text boxws in asp.net

Read below article from MSDN and use validationGroup property


http://msdn.microsoft.com/en-us/library/ms227424.aspx[^]

i think this will help you,

<asp:textbox id="TextBox1" runat="server"></asp:textbox>
        <asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" errormessage="1st one" validationgroup="1st" controltovalidate="TextBox1">
        </asp:requiredfieldvalidator>
        <asp:button id="Button1" runat="server" text="Button" validationgroup="1st" causesvalidation="true" /><br />

        <asp:textbox id="TextBox2" runat="server"></asp:textbox>
        <asp:requiredfieldvalidator id="RequiredFieldValidator2" runat="server" errormessage="2nd one" validationgroup="2nd" controltovalidate="TextBox2">
        </asp:requiredfieldvalidator>
        <asp:button id="Button2" runat="server" text="Button" validationgroup="2nd" causesvalidation="true" />

Step1:Place two text boxes and two buttons.
Step2:Put the validator u want and this has a property control to validate and give the name of textbox to validate and one more property validation group give any name and go to properties of button u want to validate this also has validation group property give the same name which you gave above.
Step3:Do the step 2 for other text box also
Step4:check it this will validate seperately..as u want

Make a two group for both textbox.
for txtbx1 and btn1 group t1 and txtbx2 and btn2 group 2.
then try to run .