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get the first Item in a list linq

I am trying to get the first Item in a list and it keeps throwing an error on .Take(1) how can I get this to select the first column (thedepth) of 2 columns in a list called gammalist

 int t2 = Convert.ToInt32(total);
                    for (int i = 0; t2 >= 100; i++)
                    {
                        int depthToRemove = Convert.ToInt32(Program.myMainControl.dtoc.gammaList.Where(g => g.theDepth).Take(1));
                        Program.myMainControl.dtoc.gammaList.RemoveAt(0);
                        gammaseries.DataPoints.RemoveAt(0);
                        dtg.Rows[0].Delete();
                        t2 = depthToRemove - t2;
                        
                    }

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kaufmed

What is the type of gammaList?

r3nder

ASKER

public struct gammaPlots
{
public float thedepth { get; set; }
public float thegamma { get; set; }
}
public List<gammaPlots> gammaList = new List<gammaPlots>();

kaufmed

Your problem is you are passing an IEnumerable<gammaPlots> to Convert.ToInt32. I assume you meant to send the first theDepth value. I think you should be using First instead:

int depthToRemove = Convert.ToInt32(Program.myMainControl.dtoc.gammaList.Where(g => g.theDepth).First().theDepth);

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r3nder

ASKER

error on g.thedepth
Cannot convert lambda expression to delegate type 'System.Func<SimplyMWDClientGen2.DTO.DTOClass.gammaPlots,bool>' because some of the return types in the block are not implicitly convertible to the delegate return type
Connot implicitly convert type float to bool

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kaufmed

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r3nder

ASKER

var depthToRemove = Program.myMainControl.dtoc.gammaList.Where(g => g.thedepth >= 0.00).First().thedepth;
this gives me almost all the depths added together - I just want the first depth - what am I doing wrong - I don't see it

r3nder

ASKER

Wait that is getting the depth - I need to do some math now

r3nder

ASKER

Thanks Kaufmed