ASP.NET - C# - Format string to numeric value

I have a value I am retrieving from a database.  I am assigning the value to a text box on my asp.net form.  The field in the database is a money value.  I want the below result.

Database Value     Result Value
0.000000                0.00

I have tried the following

string s = string.Format("{0:c}", rdr["myValue"].ToString());
this.myTextBox.text = s;

and

string s = string.Format("{0:#,0.00}", rdr["myValue"].ToString());
this.myTextBox.text = s;

But neither works.

Any ideas?
LVL 2
CipherISAsked:
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käµfm³d 👽Commented:
You cannot call ToString and use a numeric format at the same time. Cast the thing returned from the database to a numeric type; then apply the format.

e.g.

string s = string.Format("{0:c}", (double)rdr["myValue"]);

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p_davisCommented:
what do you get? what is the value of s?

you can also try string.Format("{0:C}", rdr["myValue"].ToString());
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p_davisCommented:
are you just getting 0?
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p_davisCommented:
String.Format("{0:.##}", rdr["myValue"].ToString());
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CipherISAuthor Commented:
@p_davis - I'm getting "0.0000" as a result for
string s = string.Format("{0:c}", rdr["myValue"].ToString());

I tried string s = string.Format("{0:C}", rdr["myValue"].ToString());
and still getting "0.0000"
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CipherISAuthor Commented:
Thanks kaufmed!
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