Question

I have some vb code i would find it helpful if someone was able to convert it to c# for me. I dont really know what the left function does?

If Left(cboLeng, 1) = "1" And Left(cboLeng, 1) = "2" And Left(cboLeng, 1) = "3" And Left(cboLeng, 1) = "4" And Left(cboLeng, 1) = "5" And Left(cboLeng, 1) = "6" And Left(cboLeng, 1) = "7" And Left(cboLeng, 1) = "8" And Left(cboLeng, 1) = "9" Then
        Leng = "L" & cboLeng.Text
    Else
        Leng = cboLeng.Text
    End If

Answer 1

(It’s not clear what cboLeng is here, by the way – it looks like it’s being used as a string and a type which contains a Text property. More information would help. The rest of this answer assumes it’s a string – otherwise, just use the Text property once to get the string value, and operate on that.)

The Left function takes an initial substring – but that code doesn’t make sense. It’s sort of equivalent to:

if (cboLeng.StartsWith("1") && cboLen.StartsWith("2") && ...)
{
}

A string can’t start with “1” and start with “2”. My guess is it really wants to be something like:

// TODO: Check for an empty string
char firstChar = cboLeng[0];
if (firstChar >= '1' && firstChar <= '9')
{
    Leng = "L" + cboLeng;
}
else
{
    Leng = cboLeng;
}