Dropdwonlist required field validator

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hi sir;
I have a dropdownlist in my webForm and bind the items from database. But I unable to make field validator for drpdownlist. I know for dropdownlist to Select initial value but it doesn't work.

please help me;
thanks for advance;
here is my code:

XML

<asp:RequiredFieldValidator ID="RequiredFieldValidator10" runat="server"
                                       ControlToValidate="drpclassno" ErrorMessage="Please select class"; ForeColor="Red"
                                       InitialValue="--Select Class--"></asp:RequiredFieldValidator>

Posted 29-May-13 20:36pm

Wajid Khaksar

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4 solutions

Solution 2

Remove semicolon from validator you have used in

ErrorMessage="Please select class";

Posted 29-May-13 23:00pm

Masoom Mir

Solution 3

Required Field Validator is used to bind user to not leave the field empty... But if you do not give empty list item in drop down list than there is no need for the validator,

If you are binding the Drop Down List from Database than don't allow any empty row in DB, so that no validation is required, because all the time drop down list would be having populated with at least one item,

Further if you still want to correct your given piece of Validator code in Question, than follow the solution provided by Masoom Mir[Solution 2] and along with that put the

InitialValue=" "

i.e. to empty white space,, that will work..

Regards,

:)

Posted 29-May-13 23:17pm

VICK

Solution 4

XML

<td align="left" valign="top">
                           <asp:DropDownList ID="ddlPresentStatus" runat="server" CssClass="dropdowncontrol">
                           </asp:DropDownList>
                           <asp:RequiredFieldValidator ID="rflanguage" runat="server" ControlToValidate="ddlPresentStatus"
                               ValidationGroup="a" CssClass="rfmsg" InitialValue="" ErrorMessage="*Please select Present Status" />
                       </td>

aspx.cs:

ddlPresentStatus.Items.Insert(0, new ListItem("select", " "));

Posted 29-May-13 23:24pm

sainadh.chintha

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Kishan Hadiyal · Accepted Answer · 2013-05-29T21:11:00

Solution 1

XML

<asp:RequiredFieldValidator ID="RequiredFieldValidator10" runat="server" ControlToValidate="drpclassno" ErrorMessage="Please select class" ForeColor="Red" InitialValue="0"></asp:RequiredFieldValidator>

and after binding dropdown write this code

DropdownListID.Items.Insert(0, new ListItem("Select Parent Category", "0"));

It will work

Posted 29-May-13 21:11pm

Kishan Hadiyal

Updated 3-Jun-13 23:04pm

v3

Comments

Wajid Khaksar 30-May-13 5:19am

Thanks a lot Sir.