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Compiler Warning (level 1) CS1058
Compiler Warning (level 1) CS1060
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Compiler Warning (level 1) CS1616
Compiler Warning (level 1) CS1658
Compiler Warning (level 1) CS1683
Compiler Warning (level 1) CS1685
Compiler Warning (level 1) CS1690
Compiler Warning (level 1) CS1691
Compiler Warning (level 1) CS1699
Compiler Warning (level 1) CS1762
Compiler Warning (level 1) CS1956
Compiler Warning (level 1) CS3003
Compiler Warning (level 1) CS3007
Compiler Warning (level 1) CS3009
Compiler Warning (level 1) CS4014
Compiler Warning (level 2) CS0108
Compiler Warning (level 2) CS0467
Compiler Warning (level 2) CS0618
Compiler Warning (level 2) CS1701
Compiler Warning (level 3) CS0675
Compiler Warning (level 3) CS1700
Compiler Warning (level 4) CS0429
Compiler Warning (level 4) CS1591
Compiler Warning (level 4) CS1610
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Compiler Warning (level 1) CS3003

Visual Studio 2012

Type of 'variable' is not CLS-compliant

A public, protected, or protected internal variable must be of a type that is compliant with the Common Language Specification (CLS). For more information on CLS Compliance, see Language Independence and Language-Independent Components.

The following example generates CS3003:

Copy 
// CS3003.cs

[assembly:System.CLSCompliant(true)]
public class a
{
    public ushort a1;   // CS3003, public variable
    public static void Main()
    {
    }
}
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