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Is it posssible to check if the value or text of exists as an item in the dropdownlist?

Asked by amukta in .NET Framework 2.x, Programming for ASP.NET, C# Programming Language

HI!

I have some dropdown lists on the page.Code in c#/asp.net 2.0
I need to fill them with the values from the database.
Sometimes when  there is no correct data in the table. my code blows up

as of now, I'm doing it this way

if(!String.IsNullorEmpty(dreader["field"].toString()))//I'm using the right case and syntax in the code.   ddl.selectedvalue=dreader["field"].ToString+"";//dreader is the datareader
else
  ddl.selectedindex=0;
The "0"th item has a value <--Please Select--> for some and "" for some.

How do I read text into dropdownlist...this is another question in addition to the above question.

Any logic/code would be greatly appreciated.
Thanks a lot in advance!
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