Attribute 'DllImport' is not valid on this declaration type. It is only valid on 'method' declarations

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Hi... i m getting this(Attribute DllImport is not valid on this declaration type. It is only valid on method declarations) error after calling a dll....

please see following code

<pre lang="cs">using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.IO;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Data.OleDb;

namespace EmpDetail
{

public partial class Form1 : Form
{

[DllImport("AkrutiEngine.dll")]

static int a;

Posted 10-Mar-13 19:24pm

PRAKASH_N

Updated 10-Mar-13 19:25pm

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Sergey Alexandrovich Kryukov · Accepted Answer · 2013-03-10T19:37:00

Can you really read the error message? This is what it is. You are trying to apply the DllImport attribute to a field, which makes no sense whatsoever.

Technically, it is implemented through application of another attribute, System.AttributeUsageAttribute to this attribute, to limit the targets of some attributes:
http://msdn.microsoft.com/en-us/library/system.attributeusageattribute.aspx[^],
http://msdn.microsoft.com/en-us/library/system.attributetargets.aspx[^].

You can apply the attribute System.Runtime.InteropServices.DllImportAttribute only to methods, as you should have understood from your error message:
http://msdn.microsoft.com/en-us/library/system.runtime.interopservices.dllimportattribute.aspx[^].

I doubt you have a clue why using DllImport. To learn about it, please see:
http://en.wikipedia.org/wiki/P/Invoke[^],
http://msdn.microsoft.com/library/en-us/vcmxspec/html/vcmg_PlatformInvocationServices.asp[^].

This CodeProject article can also be used: http://www.codeproject.com/csharp/EssentialPInvoke.asp[^].

—SA