Web Forms :: Enable / Disable Control With RangeValidator?

Apr 6, 2010

I have a text box, a range validator, and a button. The validator is hooked up and prevents the button from doing a post back if the text is out of the range, however I'd also like to enable and disable the button. Is this possible to do within client-side code?

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[Code]....

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I have a dropdown list for the which values are coming from DB. There is one option name OTHER, when I select other the textbox appears. For that Textbox I have made a required field validator. Till here it works fine. But when I select any other option, still it gives me validator errors. It should not happen. It should only give me required field error when the user doesn't fills the textbox on select of OTHER option. Please see the code.

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<script language="javascript" type="text/javascript">
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[Code] .....

How to achieve this...

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Web Forms :: How To Use A RangeValidator Control Which Will Validate Password Field

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[Code]....

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Web Forms :: Enable Disable Validators Based On DropDownList Selection

May 7, 2015

I have 2 RequiredFieldValidator 

1-Rfvare
2-RfvareC

that I put RFvare.visible=false  and RfcareaC.visible=true

 and 1 dropdown list below is my code:

<div id="zirbanaval"> <asp:RequiredFieldValidator ID="Rfvarea" runat="server" ErrorMessage="*لطفا مساحت زمین را وارد نمایید." ControlToValidate="txtarea" CssClass="RfvareaC" Visible="false"></asp:RequiredFieldValidator> <asp:RequiredFieldValidator ID="RfvareC" runat="server" ErrorMessage="*لطفا زیر بنا را وارد نمایید" ControlToValidate="txtMesure" CssClass="RfvareabanaC"></asp:RequiredFieldValidator> </div>

I want if users select item="Area" from dropdownlist then Rfvare.visible=true and RfvareaC.visible= false 

Below is code:

protected void ddltype_OSIC(object sender, EventArgs e) {
string code = ddltype.SelectedItem.Text;
switch (code)
{
case "area":
Rfvarea.Visible = true;
RfvareC.Visible = false;

[Code] ....

but it doesn't work I mean always it shows requiredFieldValidator==>Rfvare.visible=true)

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