Both validations are fired at once

<form id="form1" runat="server"> <div> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator ><br /> <asp:RangeValidator ID="RangeValidator1" runat="server" ControlToValidate="TextBox1" MinimumValue="10" MaximumValue="100" ErrorMessage="Max Min Value" ValidationGroup="one"></asp:RangeValidator><br /> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="n nj" ControlToValidate="TextBox1" ValidationExpression=&qu ...