Vous pouvez utiliser Validation Group.
Exemple de code ici:
<body>
<form id="form1" runat="server">
<div>
<h1>Group1</h1>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox1" ValidationGroup="group1"></asp:RequiredFieldValidator>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox2" ValidationGroup="group1"></asp:RequiredFieldValidator>
<br /><br />
<h1>Group2</h1>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox3" ValidationGroup="group2"></asp:RequiredFieldValidator>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox4" ValidationGroup="group2"></asp:RequiredFieldValidator>
<br /><br />
<asp:Button ID="Button1" runat="server" Text="Button" ValidationGroup="group1" />
<asp:Button ID="Button2" runat="server" Text="Button" ValidationGroup="group2" />
</div>
</form>
</body>
je savais qu'il y aurait une solution simple. Merci! – Ben