C# - Selecting record from Dataset

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I'm trying to select the records from DataSet which is not having the particular condition. Exact Requirement is below. 

select * from DS where Module != 'All' 

here module is the fields, one of the value for Module is "All" 

i want to select the records which is not having the Module value "All".

i tried the below codes. but it is not working.

• ds.Tables[0].Select("Module Not 'All'");

• ds.Tables[0].Select("Module is Not 'All'");

• ds.Tables[0].Select("Module != 'All'"); 

 Please help me to do this process.

Thanks for Support.

Thanks ,

Maria