C#调用Web Service时的身份验证

原理：webservice所在的系统中，在系统域中建立用于登录的软件的用户和密码，软件登录时将用户名、密码和登录的本机的域的名字通过webService的NetworkCredential传递到webService中通过一个方法得到域中的用户、密码和域进行匹配，从而得到是否有权限

webservice代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;

using System.Data;
using System.Net;
using System.Data.SqlClient;

namespace WebServiceSocket
{
/// <summary>
/// Service1 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{

/// <summary>
/// 读取数据表数据统一方法
/// </summary>
/// <param name="where">查询条件</param>
/// <param name="tableName">对应数据表名</param>
/// <param name="Credential">授权凭证</param>
/// <returns></returns>
[WebMethod(Description = "功能：[SQL]读取数据方法，返回值DS", EnableSession = false)]
public DataSet GetTableDataInfo(string where, string tableName, NetworkCredential Credential)
{
try
{
string proc = "select * from " + tableName;
proc = string.Format(proc, where);

SqlConnection con = new SqlConnection();
DataSet ds = new DataSet();
try
{
con = new SqlConnection("server=192.168.*.***;database=****;uid=sa;pwd=****");
con.Open();

SqlDataAdapter da = new SqlDataAdapter(proc, con);
da.SelectCommand.CommandTimeout = 1800;
da.Fill(ds);
}
catch
{
ds = null;
}
finally
{
con.Close();
}
return ds;
}
catch { return null; }//, NetworkCredential Credential
}
}
}

调用代码：

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.Net.Sockets;
using System.Net;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System.Runtime.Serialization;

namespace clientWinform
{
public partial class Form1 : Form
{

public Form1()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
//ServiceSocket.Service1SoapClient so = new ServiceSocket.Service1SoapClient();
//DataSet ds = so.GetTableDataInfo("", "[LYPMMISDB].[Zeda].[tblist]", Credential);
//dataGridView1.DataSource = ds.Tables[0];

WebReference.Service1 de = new WebReference.Service1();
WebReference.NetworkCredential app = new WebReference.NetworkCredential();
app.UserName = "";
app.Password = "";
DataSet ds = de.GetTableDataInfo("", "****", app);
dataGridView1.DataSource = ds.Tables[0];
}

}
}

截图：