coredll is for smart devices, not desktop Windows. Therefore, this information only applies to code using the .NET Compact Framework. To see if information for ByVal in other DLLs exists, click on Find References to the right.

Summary

ByVal is a VB keyword that specifies a variable to be passed as a parameter BY VALUE. In other words, if the function or sub changes the value of the internal variable, it does not change the value of the external variable that was passed to it.

C# Signature:

[DllImport("coredll.dll", SetLastError=true)]
static extern TODO ByVal(TODO);

VB Signature:

Declare Function ByVal Lib "coredll.dll" (TODO) As TODO

User-Defined Types:

None.

Alternative Managed API:

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Notes:

To pass a variable by reference (i.e. change the external variable to whatever value is set inside the function/sub) use ByRef before the parameter name.

Tips & Tricks:

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Sample Code:

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Documentation

ByVal on MSDN

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