linq to sql conversion of simple duplcate chek query>/?/

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C#

DatabaseHelper dbh=new DatabaseHelper();
                Boolean flag=dbh.ExecuateReader("Select CustMobileNo FROM CustomerMaster",txtMobile.Text.Trim());
                if (flag)
                {
                    errorProvider.SetError(txtMobile, "Duplicate Numbers are not allowed!");
                    MessageBox.Show("Duplicate Numbers are not alllowed!");
                    txtMobile.Focus();
                    txtMobile.SelectAll();
                }

i am not able to convert this code in LINQ to SQL code.!!
how can i do it>???

Posted 12-Jun-12 5:29am

jinenk

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Simon_Whale · Answer 1 · 2012-06-12T05:56:00

You haven't given much to go on apart from your own custom code, but I'd have a read of this LINQ Samples[^]

But this is taken from the article

C#

public void Linq47() 
{ 
    List<product> products = GetProductList(); 
  
    var categoryNames = ( 
        from p in products 
        select p.Category) 
        .Distinct(); 
  
    Console.WriteLine("Category names:"); 
    foreach (var n in categoryNames) 
    { 
        Console.WriteLine(n); 
    } 
}
</product>

If you could explain where you are stuck more then we may be able to give you a better answer.