c#读取数据库连接字符串的问题

有的东西默认不带，所以要右键添加引用，并选择相应的程序集。

有两种用法：

1）

using System.Configuraiton

string ConStr=ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString

2)

string ConStr=System.Configuraiton.ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString

给你一个类，可以直接读取INI文件中东西

public class IniFile

{

/// <summary>

/// ini文件名称（带路径)

/// </summary>

public string filePath

//声明读写INI文件的API函数

[DllImport("kernel32")]

private static extern long WritePrivateProfileString(string section, string key, string val, string filePath)

[DllImport("kernel32")]

private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath)

/// <summary>

/// 类的构造函数

/// </summary>

/// <param name="INIPath">INI文件名</param>

public IniFile(string INIPath)

{

filePath = INIPath

}

/// <summary>

/// 写INI文件

/// </summary>

/// <param name="Section">Section</param>

/// <param name="Key">Key</param>

/// <param name="value">value</param>

public void WriteInivalue(string Section, string Key, string value)

{

WritePrivateProfileString(Section, Key, value, this.filePath)

}

/// <summary>

///读取INI文件指定部分

/// </summary>

/// <param name="Section">Section</param>

/// <param name="Key">Key</param>

/// <returns>String</returns>

public string ReadInivalue(string Section, string Key)

{

StringBuilder temp = new StringBuilder(255)

int i = GetPrivateProfileString(Section, Key, "", temp, 255, this.filePath)

return temp.ToString()

}

}

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