欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

ASP 用GridView控件连接SQL Server数据库

程序员文章站 2022-05-03 19:19:13
1 在新建的网站中添加一个Web窗体(默认窗体为default.aspx); 2 双击“对象资源管理器”中的Web.config对象,在该对象的设计代码窗...

1 在新建的网站中添加一个Web窗体(默认窗体为default.aspx);

2 双击“对象资源管理器”中的Web.config对象,在该对象的设计代码窗口中添加如下代码,实现设置连接SQL Server数据库字符串的功能。

<connectionStrings><!--连接数据库-->
<add name="connection" connectionString="data source=.;integrated security=SSPI;initial catalog=newsfabu"></add>
</connectionStrings>  

3 双击Default.aspx在设计的界面中添加一个GridView控件。

4 双击Default.aspx.cs在代码区添加如下代码。

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            GridViewBind();      //调用绑定数据信息函数

        }

    }

     public void GridViewBind()

    {

        this.Title = "新闻发布中心";

        SqlConnection sqlcon = new SqlConnection(ConfigurationManager.

                               ConnectionStrings["connection"].ConnectionString);

        sqlcon.Open();

        SqlDataAdapter adsa = new SqlDataAdapter("select * from news", sqlcon);

        DataSet ds = new DataSet();

        adsa.Fill(ds);

        if (ds.Tables[0].Rows.Count > 0)

        {

            GridView1.DataSource = ds;

            GridView1.DataBind();

        }

        sqlcon.Close();

    }

附:ASP连接数据库,并实现增删改的功能:

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            GridViewBind();      //调用绑定数据信息函数www.2cto.com

        }

    }

 

    public void GridViewBind()

    {

        this.Title = "新闻发布中心";

        SqlConnection sqlcon = new SqlConnection(ConfigurationManager.

                               ConnectionStrings["connection"].ConnectionString);

        sqlcon.Open();

        SqlDataAdapter adsa = new SqlDataAdapter("select * from news", sqlcon);

        DataSet ds = new DataSet();

        adsa.Fill(ds);

        if (ds.Tables[0].Rows.Count > 0)

        {

            GridView1.DataSource = ds;

            GridView1.DataBind();

        }

        sqlcon.Close();

    }

 

    protected void 添加新闻_Click(object sender, EventArgs e)

    {

        if (TextBox1.Text == "" || TextBox2.Text == "")

        {

            this.Page.RegisterStartupScript("ss", "<script>alert('请输入编号')</script>");

        }

        else

        {

            SqlConnection con = new SqlConnection(ConfigurationManager.

                                ConnectionStrings["connection"].ConnectionString);

 

            string insert = "insert into news(新闻编号,新闻类别,新闻题目,新闻内容)

                            values(@_id,@_leibie,@_timu,@_neirong)";

 

            SqlCommand cmd=new SqlCommand (insert,con);

            cmd.Parameters.Add("@_id", SqlDbType.Int);

            cmd.Parameters["@_id"].Value = TextBox1.Text.Trim();

            cmd.Parameters.Add("@_leibie", SqlDbType.VarChar);

            cmd.Parameters["@_leibie"].Value = TextBox2.Text.Trim();

            cmd.Parameters.Add("@_timu", SqlDbType.VarChar);

            cmd.Parameters["@_timu"].Value = TextBox3.Text.Trim();

            cmd.Parameters.Add("@_neirong", SqlDbType.VarChar);

            cmd.Parameters["@_neirong"].Value = TextBox4.Text.Trim();

            con.Open();

            cmd.ExecuteNonQuery();

            GridViewBind();

 

        }

    }

 

    protected void 删除新闻_Click(object sender, EventArgs e)

    {

        if (TextBox1.Text == "")

        {

            this.Page.RegisterStartupScript("ss", "<script>alert('请输入你想删除的编号')</script>");

        }

        else

        {

            SqlConnection con = new SqlConnection(ConfigurationManager.

                               ConnectionStrings["connection"].ConnectionString);

            string delete = "delete news from news where 新闻编号='" + TextBox1.Text + "'";

            SqlCommand com = new SqlCommand(delete, con);

            con.Open();

            com.ExecuteNonQuery();

            con.Close();

            GridViewBind();

        }

    }

    protected void 修改新闻_Click(object sender, EventArgs e)

    {

        if (TextBox1.Text == "")

        {

            this.Page.RegisterStartupScript("ss", "<script>alert('请输入你要删除的编号')</script>");

        }

        else

        {

            SqlConnection con = new SqlConnection(ConfigurationManager.

                                ConnectionStrings["connection"].ConnectionString);

            string update = "update news set 新闻类别='" + TextBox2.Text + "',

                           新闻题目='" + TextBox3.Text + "',新闻内容='" +

                           TextBox4.Text + "' where 新闻编号='" + TextBox1.Text + "'";

            SqlCommand cmd = new SqlCommand(update, con);

            con.Open();

            cmd.ExecuteNonQuery();

            con.Close();

            GridViewBind();

        }

    }
 


摘自 net小伙