i basically want to take int name and string age from user in c# and send it to dll method written in c which take int and char[50] arguments in it and return string .i created following scenario but i am failed ,any body has the code
i have a dll developed in c which ahas a structure
struct Argument
{
int age;
char name[50];
} ;
and a method
extern "C"
{
__declspec(dllexport) Argument FillData(Argument data)
{
Argument mydata;
mydata.age=data.age;
for(int i=0;i<=sizeof(data);i++)
{
mydata.name[i]=data.name[i];
}
return mydata;
}
i declare it in c# in Cs_dll.cs
[StructLayout(LayoutKind.Sequential,CharSet=CharSet.Ansi)]
public struct Argument
{
public int age;
[MarshalAs(UnmanagedType.TBStr)]
//public char name;
public char[] name;
};
public class Cs_Dll
{
[DllImport("TestLib.dll")]
public static extern Argument FillData (Argument data);
}
now againts a button iwant to do
private void button1_Click(object sender, EventArgs e)
{
Argument data=new Argument();
data.age=Convert.ToInt32(textBox_age.Text);
char[] name={'a','b','r','a','r', ' ', 'a', 'h', 'm', 'e', 'd', '' };
for (int i = 0; i <= name.Length; i++)
{
data.name[i] = name[i];
}
// Array.Copy(name, data.name, name.Length);
Argument result = Cs_Dll.FillData(data);
textBox_get.Text = result.age.ToString();
textBox_age.Text = result.name.ToString();
}
but i am stuck with error
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