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I tried to call extension string extension function , if not in delegatefunction it works well, but
in delegate function can't call extension method
then how to call extension method in delegate function?
It seems to work, maybe because your details are different.
really ? I define my extension function like this
but only in delegate i can't call this function
ah sorry , it works... but when i call it from dll
compiler says can't find stirng extension method
Maybe an assembly reference or using statement is missing?
Try this
public static class Extensions
{
public static string replace(this string str, RegExp search, string replace)
{
return RegExp.Replace(str,search.source,replace);
}
}
Replace is for strings
new Random().NextDouble().ToString().Replace( . . .
ah sorry i found a why it is not worked but i don't have further idea how i can solve it
"jQuery" + ((func2_version + new Random().NextDouble())).replace(new RegExp("\D", "g"), "");
in here func2_version is dynamic type ,
runtimebinder knew (func2_version+new Random().NextDoube()) is type of string
but it is strangely can't find string's extension method
if I specify string type cast it works .....
"jQuery" + ((string)(func2_version + new Random().NextDouble())).replace(new RegExp("\D", "g"), "");
but I want a way of not specifying cast
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The compiler needs to know the datatype of a variable to pick the proper class extension. The point of a dynamic is the datatype is not known to runtime. This means you can not use a string extension on a dynamic.
As your replace extension method only works if the dynamic is a string (otherwise it throws an error), you should be able cast.
A better solution is to convert the result of the + operation to a string
"jQuery" + (func2_version + new Random().NextDouble()).ToString().replace(new RegExp("\\D", "g"), "");