santosh asp.net tutorial

ValidationSummary control is used to display a summary of all validation errors occurred in a Web page, at one place. In general, in a real time applications, it is very common to display a red star symbol next to the input control where the error occurred, and then the detailed error message in the validation summary control as shown below. 



Properties specific to the validation summary control:
HeaderText - The header text for the validation summary control
ShowSummary - Whether to display the summary text of all the validation errors
ShowMessageBox - Whether to display a message box with all the validation errors
DisplayMode - Display format for the summary.

DisplayMode can be List, BulletList, SingleParagraph  

HTML of the ASPX Page:
<div style="font-family: Arial">
    <table style="border: 1px solid black">
        <tr>
            <td colspan="2">
                <h2>User Registration</h2>
            </td>
        </tr>
        <tr>
            <td>
                <b>Email</b>
            </td>
            <td>
                <asp:TextBox ID="txtEmail" runat="server" Width="100px">
                </asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidatorEmail" 
                runat="server" ForeColor="Red"
                ErrorMessage="Email is required"
                ControlToValidate="txtEmail" Display="Dynamic" Text="*">
                </asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator ID="RegularExpressionValidatorEmail" 
                runat="server" ErrorMessage="Invalid Email Format"
                ControlToValidate="txtEmail" ForeColor="Red" 
                ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"
                Text="*">
                </asp:RegularExpressionValidator>
            </td>
        </tr>
        <tr>
            <td>
                <b>User Name</b>
            </td>
            <td>
                <asp:TextBox ID="txtUserName" runat="server" Width="100px">
                </asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidatorUserName" 
                runat="server" ForeColor="Red"
                ErrorMessage="Username is required"
                ControlToValidate="txtUserName" Display="Dynamic" Text="*">
                </asp:RequiredFieldValidator>
            </td>
        </tr>
        <tr>
            <td>
                <b>Password</b>
            </td>
            <td>
                <asp:TextBox ID="txtPassword" runat="server" Width="100px" 
                TextMode="Password"></asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidatorPassword" 
                runat="server" ForeColor="Red"
                ErrorMessage="Password is required"
                ControlToValidate="txtPassword" Display="Dynamic" Text="*">
                </asp:RequiredFieldValidator>
            </td>
        </tr>
        <tr>
            <td>
                <b>Confirm Password</b>
            </td>
            <td>
                <asp:TextBox ID="txtConfirmPassword" runat="server" TextMode="Password" 
                Width="100px"></asp:TextBox>
                <asp:CompareValidator ID="CompareValidatorPassword" runat="server" 
                ErrorMessage="Password and Confirm Password must match"
                ControlToValidate="txtConfirmPassword" ControlToCompare="txtPassword"
                Operator="Equal" Type="String" ForeColor="Red" Text="*">
                </asp:CompareValidator>
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <asp:Button ID="btnSubmit" runat="server" Text="Save" 
                    onclick="btnSubmit_Click" />
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <asp:ValidationSummary ID="ValidationSummary1" runat="server" 
                ForeColor="Red" HeaderText="Page Errors" ShowMessageBox="True"
                ShowSummary="true" DisplayMode="List"
                />
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <asp:Label ID="lblStatus" runat="server" Font-Bold="true"></asp:Label>
            </td>
        </tr>
    </table>
</div>