C# - Disable Default Selection In Dropdownlist?

Mar 28, 2011

i want the code to disable default selection in dropdownlist in asp.net and also on selection of a particular data field the values are displayed in the txtbox below.the dropdown should be filled with system related data like eg c:drive, d ... etc dynamically at run time.

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I have two tables :

1- Builder

2- Project

Structure of Builder Table :

ID        INT       PK   Autogenerated

Name    nvarchar(50)

Structure of Project Table :

ID                   INT     PK     Autogenerated

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I have 2 RequiredFieldValidator 

1-Rfvare
2-RfvareC

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 and 1 dropdown list below is my code:

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Below is code:

protected void ddltype_OSIC(object sender, EventArgs e) {
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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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[code]...

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[CODE].....

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VS 2008 Dropdownlist Selection Disables / Enables Another Dropdownlist

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I have a dropdownlist on my page with dates such as 1/1/2013, 2/1/2013, etc.

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

[Code]....

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[code]...

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[Code]....

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