1.首先要連接數據庫,自然要有數據庫啦,創建一個數據庫表Login,並插入一個數據:
--創建數據庫表login CREATE TABLE Login ( UName VARCHAR(20) PRIMARY KEY NOT NULL, UPassword VARCHAR(30) NOT NULL, UState INT DEFAULT'0' NOT NULL ) --查詢Login表 SELECT * FROM Login SELECT UName,UPassword FROM Login --插入數據 INSERT INTO Login(UName,UPassword) VALUES('張三','123456')
2.下面就是WCF服務的創建了,直接創建一個WCF服務應用程序,項目名稱為“ODataBase”,如下圖:
3.創建服務契約和創建服務:
(1)IDataBase.cs (創建服務契約):
using System.Data; using System.ServiceModel; namespace ODataBase { [ServiceContract] public interface IService1 { //新增數據 [OperationContract] int InsertLogin(string strName,string strPwd); //刪除數據 [OperationContract] int DeleteLogin(string strName); //修改數據 [OperationContract] int UpdataLogin(string strName, string strPwd); //查詢數據 [OperationContract] DataSet SelectLogin(); } }
(2)DataBase.svc (創建服務)
using System.ServiceModel; using System.Data; using System.Data.SqlClient; using System; namespace ODataBase { public class DataBase : IService1 { //連接數據庫 SqlConnection strCon = new SqlConnection(@"server=IT01\SQLEXPRESS;uid=sa;pwd=yc12369;database=yctest"); //添加數據 public int InsertLogin(string strName,string strPwd) { try { strCon.Open(); string strSql = "INSERT INTO Login(UName,UPassword) VALUES(@strName,@strPwd)"; SqlCommand cmd = new SqlCommand(strSql,strCon); SqlParameter parn = new SqlParameter("@strName",strName); cmd.Parameters.Add(parn); SqlParameter parp = new SqlParameter("@strPwd",strPwd); cmd.Parameters.Add(parp); //result接受受影響的行數,也就是說大於0的話表示添加成功 int result = cmd.ExecuteNonQuery(); cmd.Dispose(); return result; }catch(Exception ex) { throw ex; }finally { strCon.Close(); } } //刪除數據 public int DeleteLogin(string strName) { try { strCon.Open(); string strSql = "DELETE FROM Login WHERE UName = @strName"; SqlCommand cmd = new SqlCommand(strSql,strCon); SqlParameter parn = new SqlParameter("@strName",strName); cmd.Parameters.Add(parn); int result = cmd.ExecuteNonQuery(); cmd.Dispose(); return result; }catch(Exception ex) { throw ex; }finally { strCon.Close(); } } //修改數據 public int UpdataLogin(string strName,string strPwd) { try { strCon.Open(); string strSql = "UPDATE Login SET UPassWord=@strPwd WHERE UName =@strName"; SqlCommand cmd = new SqlCommand(strSql,strCon); SqlParameter parn = new SqlParameter("@strName",strName); cmd.Parameters.Add(parn); SqlParameter parp = new SqlParameter("@strPwd",strPwd); cmd.Parameters.Add(parp); int result = cmd.ExecuteNonQuery(); cmd.Dispose(); return result; }catch(Exception ex) { throw ex; }finally { strCon.Close(); } } //查詢數據 public DataSet SelectLogin() { try { strCon.Open(); string strSql = "SELECT UName,UPassword FROM Login "; DataSet ds = new DataSet(); SqlDataAdapter s = new SqlDataAdapter(strSql, strCon); s.Fill(ds); return ds; }catch(Exception ex) { throw ex; }finally { strCon.Close(); } } } }
4.然后新建一個名為Web4DataBase的Web客戶端(用於測試),先引用創建的WCF服務,具體過程見WCF初見之HelloWorld,然后進行Web端的代碼編寫:
(1)Test4DataBase.aspx(Web界面代碼)
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Test4DataBase.aspx.cs" Inherits="Web4DataBase.Test4DataBase" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>SQL數據庫操作測試</title> </head> <body> <form id="DataBaseFrom" runat="server"> <h2>SQL數據庫操作測試</h2> <br /> 用戶名:<asp:TextBox ID="txbName" runat="server"></asp:TextBox> <br /><br /> 密 碼:<asp:TextBox ID="txbPwd" runat="server" TextMode="Password"></asp:TextBox> <br /><br /> <asp:Button ID="btn_InsertLogin" runat="server" Text="新增數據" onclick="btn_InsertLogin_Click"/> <asp:Button ID="btn_DeleteLogin" runat="server" Text="刪除數據" onclick="btn_DeleteLogin_Click"/> <asp:Button ID="btn_UpdataLogin" runat="server" Text="更新數據" onclick="btn_UpdataLogin_Click"/> <asp:Button ID="btn_ResetLogin" runat="server" Text="重置數據" onclick="btn_ResetLogin_Click"/> <br /><br /> <asp:GridView ID="gvLogin" runat="server" AutoGenerateColumns="False"> <Columns> <asp:BoundField DataField="UName" HeaderText="用戶名" /> <asp:BoundField DataField="UPassword" HeaderText="密碼" /> </Columns> </asp:GridView> </form> </body> </html>
(2)Test4DataBase.aspx.cs(功能實現代碼)
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace Web4DataBase { public partial class Test4DataBase : System.Web.UI.Page { service.Service1Client host = new service.Service1Client(); protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { BindData(); }; } //綁定數據源 private void BindData() { gvLogin.DataSource = host.SelectLogin(); gvLogin.DataBind(); } //新增數據 protected void btn_InsertLogin_Click(object sender, EventArgs e) { string strName = txbName.Text.Trim(); string strPwd = txbPwd.Text.Trim(); host.InsertLogin(strName,strPwd); BindData(); } //刪除數據 protected void btn_DeleteLogin_Click(object sender, EventArgs e) { string strName = txbName.Text.Trim(); host.DeleteLogin(strName); BindData(); } //更新數據 protected void btn_UpdataLogin_Click(object sender, EventArgs e) { string strName = txbName.Text.Trim(); string strPwd = txbPwd.Text.Trim(); host.UpdataLogin(strName, strPwd); BindData(); } // 重置數據 protected void btn_ResetLogin_Click(object sender, EventArgs e) { txbName.Text = ""; txbPwd.Text = ""; } } }
5.效果圖如下: