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# InStr Function

ត្រឡប់​ទីតាំង​របស់​ខ្សែអក្សរ​មួយ​ក្នុង​ខ្សែអក្សរ​មួយ​ទៀត ។

បើក​ឯកសារ​នេះ​ក្នុង​របៀប​បាន​តែ​អាន

### Syntax:

    InStr ([Start As Long,] String1 As String, String2 As String[, Compare]) As Integer

### Return value:

Integer

### Parameters:

Start: A numeric expression that marks the position in a string where the search for the specified substring starts. If you omit this parameter, the search starts at the first character of the string. The minimum allowed value is 1. The maximum allowed value is 2,147,483,648.

String1: The string expression that you want to search.

String2: The string expression that you want to search for.

Compare: Optional numeric expression that defines the type of comparison. The value of this parameter can be 0 or 1. The default value of 1 specifies a text comparison that is not case-sensitive. The value of 0 specifies a binary comparison that is case-sensitive.

To avoid a run-time error, do not set the Compare parameter if the first optional parameter is omitted.

### Error codes:

5 ការ​ហៅ​បែបបទ​មិន​ត្រឹមត្រូវ

## ឧទាហរណ៍ ៖

    Sub ExamplePosition
    Dim sInput As String
    Dim iPos As Integer
        sInput = "Office"
        iPos = Instr(sInput,"c")
        Print iPos
    End Sub