Copy table to temp table

[zenrast]

I would like to copy an existing Table(not file) to a new "temporary Table" that i would then use(so i dont modify the original Table).
Can i do this in Designer or using C# ?

I tired this in C# but for some reason the project Fails to even start:

Created "orgTable" and "orgTableTemp" in Designer. Then inserted a C$ code:
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var orgTable = project.Tables["orgTable"];
project.Tables["orgTableTemp"] = orgTable;
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regards,
G