Regular Expression Validator

File Upload Validation


<asp:FileUpload ID="FileUpload1" runat="server" />
    <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"
        ControlToValidate="FileUpload1" ErrorMessage="Fileupload"
        ValidationExpression="^(([a-zA-Z]:)|(\\{2}\w+)\$?)(\\(\w[\w].*))(.doc|.docs|.jpg|.JPG|.gif|.GIF|.jpeg|.JPEG|.bmp|.BMP|.png|.PNG)$" 
        ValidationGroup="v"></asp:RegularExpressionValidator>

Small And Capital words and values in Textbox


<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server"
        ControlToValidate="TextBox2" ErrorMessage="Chars Caps and Smalls"
        ValidationExpression="\w[a-z,A-Z,0-9]*"></asp:RegularExpressionValidator>
<asp:Button ID="Button3" runat="server" Text="submit" />

Only Special Symbols in Textbox


<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server"
        ControlToValidate="TextBox2" ErrorMessage="Chars Caps and Smalls"
        ValidationExpression=".*[@#$%^&*/].*"></asp:RegularExpressionValidator>
<asp:Button ID="Button3" runat="server" Text="submit" />