Web Forms :: Can DropDownList Selection Disable Another TextBox RequiredFieldValidator

Jul 21, 2010

Is there anyway to disable a textBox's validation(RequiredFieldValidator) base on the selection of dropDownList ?

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Web Forms :: Enable Disable Validators Based On DropDownList Selection

May 7, 2015

I have 2 RequiredFieldValidator 


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)
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[Code] ....

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

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I have two tables :

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2- Project

Structure of Builder Table :

ID        INT       PK   Autogenerated

Name    nvarchar(50)

Structure of Project Table :

ID                   INT     PK     Autogenerated

BuilderID          INT    

ProjectName     nvarchar(50)

Now i have a dropdown combo which is manually binded to Builder Table , what i want is that it would disable all those builders in the dropdown to be selected which are residing in Project Table.

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<asp:DropDownList runat="server" ID="DDLSalesPerson" DataValueField="keyid" DataTextField="FullName" />
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How To Disable RequiredFieldValidator In Script

Apr 22, 2010

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I've recently finished building one of my first websites (and CMS) in ASP.NET but have came across a problem where a RequiredFieldValidator isn't working as it should do? I originally created the admin page to not require the RequiredFieldValidator, but now that I do need it the page won't acknowledge it's there. I have even set the field in the database to not accept nulls, but the query will still insert a null value into the database (SQL Server 2008 Express).

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I'm looking to disable my requiredfieldvalidator when I have a my outer div's display set to none. I'm using this to toggle billing and shipping panels on the client side using jquery by removing them from view without a page refresh.

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I want to use requiredFieldValidator when the textbox has no text and clicking inputbutton.

I want to do if I clicking button with no text in textbox, It comes requiredFieldValidator error message, no popup window.

code is below.


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How to display the error message inside the text box when using requiredfieldvalidator?

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I have 2 dropdownlist, one is to dropdown department, and another dropdown staffnames. the secong dropdownlist will based on the selection of department as each department has different staffs i have 2 tables department and staff in my database , in my department table i have departmentid as PK and departmentname, in my staff table i have staffname and departmentid as FK. So my ques is how am i going to populate staffname in the dropdownlist according to the selection of department.

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Web Forms :: Populating Dropdownlist Upon Selection Of Another Dropdownlist?

Jan 19, 2010

I have one table which contains branch codes(primary key), Branch name and bank name columns. I have 3 dropdownlist boxes. the first dropdownlist is for the branch codes. When i select the a branch code i need the second dropdownlist box to populate with the appropriate branch name and the third dropdownlist box to populate the bank name at the same time.

Is it possible to have one table like mine and acheive this, if so how do i go about doing this?

I did read up on this but only came across ones with 3 tables.

I am using Visual Basic to do this.

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