Asp.net 中的 DataGrid 和 GridView 批量更新

1.DataGrid 批量更新

在html的form中设置如下的DataGrid

<asp:DataGrid id="DataGrid1" style="Z-INDEX: 101; LEFT: 16px; POSITION: absolute; TOP: 32px" runat="server"
                Width="912px" Height="136px" AutoGenerateColumns="False">
                <Columns>
                    <asp:TemplateColumn HeaderText="ID">
                        <ItemTemplate>
                            <asp:Label id=Label1 runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.id") %>'>
                            </asp:Label>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="用户名">
                        <ItemTemplate>
                            <asp:TextBox id=TextBox1 runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.uname") %>'>
                            </asp:TextBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="性别">
                        <ItemTemplate>
                            <asp:TextBox runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.sex") %>' ID="Textbox2">
                            </asp:TextBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="年龄">
                        <ItemTemplate>
                            <asp:TextBox runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.age") %>' ID="Textbox3">
                            </asp:TextBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="电话">
                        <ItemTemplate>
                            <asp:TextBox runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.tel") %>' ID="Textbox4">
                            </asp:TextBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:TemplateColumn HeaderText="地址">
                        <ItemTemplate>
                            <asp:TextBox runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.addr") %>' ID="Textbox5">
                            </asp:TextBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                </Columns>
            </asp:DataGrid>
            <asp:Button id="Button1" style="Z-INDEX: 102; LEFT: 80px; POSITION: absolute; TOP: 232px" runat="server"
                Text="批量更新"></asp:Button>

在cs文件中写如下代码

        private void Page_Load(object sender, System.EventArgs e)
        {
            // 在此处放置用户代码以初始化页面
            if(!this.IsPostBack)
            {
                this.Bind();
            }
        }

        public void Bind()
        {
            try
            {
                SqlDataAdapter da=new SqlDataAdapter("select * from userinfo",conn);
                DataSet ds=new DataSet();
                da.Fill(ds,"gg");
                this.DataGrid1.DataSource=ds;
                this.DataGrid1.DataBind();
            
            }
            catch(Exception Err)
            {
                throw Err;
            }
            finally
            {

            }

        }

        Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /**//**//**//// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {    
            this.Button1.Click += new System.EventHandler(this.Button1_Click);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        private void Button1_Click(object sender, System.EventArgs e)
        {
            int k=0;
            for(int i=0;i<this.DataGrid1.Items.Count;i++)
            {
                int id=int.Parse(((Label)DataGrid1.Items[i].FindControl("Label1")).Text);
                string username=((TextBox)DataGrid1.Items[i].FindControl("TextBox1")).Text;
                string sex=((TextBox)DataGrid1.Items[i].FindControl("TextBox2")).Text;
                int age=int.Parse(((TextBox)DataGrid1.Items[i].FindControl("TextBox3")).Text);
                string tel=((TextBox)DataGrid1.Items[i].FindControl("TextBox4")).Text;
                string addr=((TextBox)DataGrid1.Items[i].FindControl("TextBox5")).Text;
                

                string sql="update userinfo set uname='"+username+"',sex='"+sex+"',age="+age+",tel='"+tel+"',addr='"+addr+"' where id="+id+"";
                SqlCommand cmd=new SqlCommand(sql,conn);
                if(conn.State==ConnectionState.Closed)
                {
                    conn.Open();
                }
                k=cmd.ExecuteNonQuery();
            
            }
            if(k>0)
            {
                Page.RegisterStartupScript("","<script>alert('更新成功!');</script>");
            }

    
        }

2.GridView 批量更新

在html的form中设置如下的GridView

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="873px">
            <Columns>
                <asp:TemplateField HeaderText="ID">
                   
                    <ItemTemplate>
                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("id") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="用户名">
                    
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("uname") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="性别">
                    
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("sex") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="年龄">
                    
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("age") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="电话">
                   
                    <ItemTemplate>
                         <asp:TextBox ID="TextBox5" runat="server" Text='<%# Bind("tel") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="地址">
                   
                    <ItemTemplate>
                       <asp:TextBox ID="TextBox6" runat="server" Text='<%# Bind("addr") %>'></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    
    </div>
        <asp:Button ID="Button1" runat="server" Text="批量更新" OnClick="Button1_Click" />

在cs文件中写如下代码

    SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["conn"]);
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            this.Bind();
        }
    }
    private void Bind()
    {
        try
        {
            SqlDataAdapter da = new SqlDataAdapter("select * from userinfo",conn);
            DataSet ds = new DataSet();
            da.Fill(ds, "ff");
            this.GridView1.DataSource = ds;
            this.GridView1.DataBind();
        }
        catch (Exception Err)
        {
            throw Err;
        }
        finally
        {

        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        int k = 0;
        foreach (GridViewRow gv in GridView1.Rows)
        {
            int id = int.Parse(((Label)gv.FindControl("Label1")).Text);
            string username = ((TextBox)gv.FindControl("TextBox2")).Text;
            string sex = ((TextBox)gv.FindControl("TextBox3")).Text;
            int age = int.Parse(((TextBox)gv.FindControl("TextBox4")).Text);
            string tel = ((TextBox)gv.FindControl("TextBox5")).Text;
            string addr = ((TextBox)gv.FindControl("TextBox6")).Text;
            string sql = "update userinfo set uname='" + username + "',sex='" + sex + "',age=" + age + ",tel='" + tel + "',addr='" + addr + "' where id=" + id + "";
            SqlCommand cmd = new SqlCommand(sql, conn);
            if (conn.State == ConnectionState.Closed)
            {
                conn.Open();
            }
            k = cmd.ExecuteNonQuery();
        }
        if (k > 0)
        {
            Page.RegisterStartupScript("", "<script>alert('更新成功!');</script>");
        }

    }