String 3 decimal places

Question

Example 1

Dim myStr As String = "38"

I want my result to be 38.000 ...

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Example 2

myStr = "6.4"

I want my result to be 6.400

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What is the best method to achieve this? I want to format a string variable with atleast three decimal places.

Answer 1

Use FormatNumber:

Dim myStr As String = "38"
MsgBox(FormatNumber(CDbl(myStr), 3))

Dim myStr2 As String = "6.4"
MsgBox(FormatNumber(CDbl(myStr2), 3))