錯誤：必須聲明主體，因爲它不標記爲抽象，EXTERN或部分

Question

的代碼產生以下錯誤：

Error: Ini.IniFile.WritePrivateProfileString(string, string, string, string)' must declare a body because it is not marked abstract, extern, or partial

Error2: Ini.IniFile.GetPrivateProfileString(string, string, string, System.Text.StringBuilder, int, string)' must declare a body because it is not marked abstract, extern, or partial

using System.Runtime.InteropServices; 
using System.Text; 

namespace Ini 
{ 
    public class IniFile 
    { 
    public string path; 

    public IniFile(string INIPath) 
    { 
     this.path = INIPath; 
    } 

    [DllImport("kernel32")] 
    private static long WritePrivateProfileString(string section, string key, string val, string filePath); 

    [DllImport("kernel32")] 
    private static int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath); 

    public void IniWriteValue(string Section, string Key, string Value) 
    { 
     IniFile.WritePrivateProfileString(Section, Key, Value, this.path); 
    } 

    public string IniReadValue(string Section, string Key) 
    { 
     StringBuilder retVal = new StringBuilder((int) byte.MaxValue); 
     IniFile.GetPrivateProfileString(Section, Key, "", retVal, (int) byte.MaxValue, this.path); 
     return ((object) retVal).ToString(); 
    } 
    } 
} 

Answer 1

使用的PInvoke調用本地方法，你需要包括EXTERN 。例如：

static extern bool WritePrivateProfileString(string lpAppName, 
    string lpKeyName, string lpString, string lpFileName); 

http://www.pinvoke.net/default.aspx/kernel32.writeprivateprofilestring