The release number of this article has been CHS311156
Symptom When you compile the Visual C # .NET console application, you may receive the following error message:
ERROR CS1502: The Best Overloaded Method Match for 'Declaration' Has Some Invalid Arguments (Error CS1502: Maximum overload method with "Declaration" has some invalid parameters)
Remarks: CS1502 error message always appears together with the CS1503 error message:
Error CS1503: argument 'arg': Cannot Convert from 'Type1' to 'Type2' (Error CS1503: Parameter "Arg": Unable to convert from "Type1" to "Type2")
Cause The parameter type passing to the function does not match the parameter type of the function. If the called function is overloaded, there is no overload version of the signature that matches the passable parameter type.
Solution To resolve this issue, do one of the following:
Carefully check the type of parameters transmitted to ensure that this type matches the parameters of the called function. Correct any coding errors that may cause this issue. If appropriate, you can convert any mismatched parameters using the System.convert class. If suitable, forced to convert any mismatched parameter type to match the type required by the function. If appropriate, another overload version of the function can be defined to match the parameter type sent.
This phenomenon is designed to make.
MORE INFORMATION In the sample Visual C # .NET console application,
Test functions have two overload versions. The first version only uses one
Int type. The second version needs
INT type as its first parameter, one
String type as its second parameter. But when
In the main function, the first parameter transmitted (
Nnum) is
String type. These two overloaded
Test functions are not
String type as the first parameter.
Using system;
Namespace X
{
Public Class Ctest
{
Public static void test (int N1) {}
Public Static Void Test (INT N1, STRING STR) {}
Public static void main ()
{
String nnum = "1000";
Ctest.test (nnum, "string2"); // cs1502
}
}
} One way to correct this error is
NNum declares as an integer as follows:
INT nnum = 1000; another method is in calling
The string is converted to an integer before the TEST function. The following code can correct the compiler error and generate the desired result:
String nnum = "1000";
Int nnumconverted = system.convert.toint32 (nnum, 10);
CTest.test (nnumconverted, "string2"); // cs1502
The information in this article applies to:
Microsoft Visual C # .NET (2002)
Recent Updated: 2002-1-17 (1.0) Keyword KBPRB KBPROD2WEB KB311156
