C#

public static string SaveName(string strName)

        [DllImport("MyBloodyDLL.dll", EntryPoint = "SaveName")]
        public static extern string SaveName(string strName);

and when calling the SaveName("string") function later, I get this beautiful exception:
Unable to find an entry point named 'SaveName' in DLL 'MyBloodyDLL.dll

<br />
string s = "123abc456";<br />
s.Remove(3, 3);<br />
Console.WriteLine(s);<br />

int BindingFlags = Reflection.BindingFlags.Instance | Reflection.BindingFlags.Public | Reflection.BindingFlags.NonPublic;
foreach (System.Reflection.FieldInfo fi in UserC.GetType.GetFields(BindingFlags)) {
	object obj = fi.GetValue(UserC);
	if (obj != null)
	{
		try {
			obj.Name();
		}
		catch (Exception ex) {
		}
	}
}

private void TextBox1_LostFocus(object sender, EventArgs e)<br />
{<br />
<br />
DialogResult result = MessageBox.show("message text","title",MessageBoxButtons.OK,MessageBoxIcon.None,MessageBoxDefaultButton.Button1):<br />
<br />
if (result == DialogResult.OK)<br />
  {<br />
    Button1.Focus();<br />
  }<br />
else<br />
  {<br />
  //Close messagebox and do some other things if 3 seconds have elapsed and OK was not clicked<br />
  }<br />
}