show alert message with Require FIeld Validation true on textbox

Question

1.00/5 (1 vote)

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Hello To all,

I want to show alert message when there require field validator true on certain textbox.

show how can i do this with the Require FIeld Validator ?

Pleas help me........

Thanks and Regards...
Mitesh

Posted 17-Oct-12 22:51pm

Mits Machhi

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Comments

AshishChaudha 18-Oct-12 4:55am

What actually you want?? An alert message after requirefieldValidator validation..

[no name] 18-Oct-12 4:55am

yes

3 solutions

Solution 3

If you need to show just alert on your textbox null value , you can simply use this javascript

C#

function validate() {
        if ((document.getElementById("TextBox1").value)=="")
        {
        alert("textbox shouldnot be empty");
        }

Posted 17-Oct-12 23:13pm

Divya RS

Solution 1

XML

<form id="form1" runat="server">
   <asp:Label ID="lblNameRequired" runat="server" Text="*Name :"></asp:Label>
   <asp:TextBox ID="txtNameRequired" runat="server" ValidationGroup="Validation"></asp:TextBox>
   <asp:RequiredFieldValidator ID="RequiredFieldValidatorName" runat="server" ControlToValidate="txtNameRequired"
       Display="None" ErrorMessage="Name is Required" ValidationGroup="Validation"></asp:RequiredFieldValidator>
   <br />
   <asp:Label ID="lblGenderRequired" runat="server" Text="*Gender :"></asp:Label>
   <asp:DropDownList ID="ddlGenderRequired" runat="server" ValidationGroup="Validation">
       <asp:ListItem Selected="True" Value="-1">--Select--</asp:ListItem>
       <asp:ListItem Value="0">Male</asp:ListItem>
       <asp:ListItem Value="1">Female</asp:ListItem>
   </asp:DropDownList>
   <asp:CompareValidator ID="CompareValidatorGender" runat="server" ControlToValidate="ddlGenderRequired"
       Display="None" ErrorMessage="Gender is Required" Operator="NotEqual" ValidationGroup="Validation"
       ValueToCompare="-1"></asp:CompareValidator>
   <br />
   <asp:Label ID="lblValidation" runat="server" Text="Fields marked with * are required"></asp:Label>
   <br />
   <asp:Button ID="btnValidate" runat="server" Text="Validate Input" ValidationGroup="Validation" />
   <br />
   <asp:ValidationSummary ID="ValidationSummary1" runat="server" ShowMessageBox="True"
       ShowSummary="False" ValidationGroup="Validation" />
   </form>

Posted 17-Oct-12 22:53pm

Mukesh_Chauhan

Comments

[no name] 18-Oct-12 4:56am

i am not want validation summary but want a alert message to user on screen.

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AshishChaudha · Accepted Answer · 2012-10-17T22:57:00

Solution 2

Try this

C#

if(!Page_ClientValidate())
{
   if( string.IsNullOrEmpty(document.getElementById("TextBox1").value) )
   {
      alert("Here I am");
      return false;
   }
}

Updated solution as suggested by Marcus.
Thanks

Posted 17-Oct-12 22:57pm

AshishChaudha

Updated 19-Oct-12 2:51am

v3

Comments

fjdiewornncalwe 18-Oct-12 12:17pm

+5. Just one note, the better way is to use string.IsNullorEmpty instead of == ""

AshishChaudha 18-Oct-12 23:55pm

Thanks Marcus..I will update my self..

AshishChaudha 20-Oct-12 0:30am

thanks for updating solution