关于GRidView控件的用法总结

 A.页面加载----

 protected void Page_Load(object sender, EventArgs e)

        {

            if (!IsPostBack)

            {

                    BindData();

                if (Request.QueryString["userid"] != null)//判断，如果可以获取到id的值，则执行以下操作

                {

                    DataTable dt = BIL.teacherinfo.GetUserByID(Request.QueryString["userid"]);

                    this.txtid.Text = dt.Rows[0]["userid"].ToString();

                    this.txtnames.Text = dt.Rows[0]["username"].ToString();

                    this.txtsex.Text = dt.Rows[0]["sex"].ToString();

                    btnSelectOrg.Attributes["onclick"] = "test();";//后台调用js

                }

            }

        }

  //显示全部信息

        public void BindData()

        {

         List <user > list=new List<user>() ;

            DataTable dt = BIL.teacherinfo.showAlluser();

            for (int i = 0; i < dt.Rows.Count; i++)

            {

                user user=new user ();

                user.Sex=dt.Rows[i]["sex"].ToString();

                user.Username = dt.Rows[i]["username"].ToString();

                user.Address  = dt.Rows[i]["adderss"].ToString();

                user.Userid  =  int.Parse ( dt.Rows[i]["userid"].ToString());

                user.Birth = Convert .ToDateTime ( dt.Rows[i]["birthday"].ToString());

                user.Ischecked =dt.Rows[i]["ischeckd"].ToString();

               list.Add(user);

             }

            this.GridView1.DataSource = list;

            this.GridView1.DataBind();

        }

  //绑定数据行

        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

        {

            if (e.Row.RowType == DataControlRowType.DataRow)

            {

                //Label num = (Label)e.Row.FindControl("lNum");

                //num.Text = (GridView1.PageIndex * GridView1.PageSize + e.Row.RowIndex + 1) + "";//自动增长序号

                Label sex = (Label)e.Row.Cells[3].FindControl("lbsex");//方法1

                user user = (user)e.Row.DataItem; //方法2（这里只有当dridview的绑定类型为list时才可以用）

                switch (user.Sex )

               // switch (sex.Text)

                {

                    case "男":

                        Button Status1 = (Button)e.Row.Cells[4].FindControl("ModifyStatus");//设置按钮的文本

                        Status1.Text = "禁用";

                      Status1.Enabled = false;

                        break;

                    case "女":

                        Button Status2 = (Button)e.Row.Cells[4].FindControl("ModifyStatus");

                        Status2.Text = "启用";

                        Status2.Enabled = true ;

                        break;

                    default:

                        break;

                }

                switch (user.Ischecked )

                {

                    case "true":

                       

                        CheckBox ckbox = (CheckBox)e.Row.Cells[5].FindControl("ischecked");

                        ckbox.Checked = true;

                        break;

                    case "false":

                        CheckBox ckbox2 = (CheckBox)e.Row.Cells[5].FindControl("ischecked");

                        ckbox2.Checked = false;

                        break;

                    default:

                        break;

                }

                //光帮效果

                e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='pink'");

                e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor");

                CheckBox box = (CheckBox)e.Row.FindControl("CheckBox1");

                box.Attributes.Add("ItemID", ((Label)e.Row.FindControl("id1")).Text);//给checkbox加属性

            }

                //底部

            else if (e.Row.RowType == DataControlRowType.Footer)

            {

                e.Row.Cells[0].Text = "<font color=red>用户人数:</font>";

                e.Row.Cells[1].Text = "<font color=red>" + GridView1.Rows.Count.ToString() + "人</font>";

                Usercount = e.Row.Cells[0].Text + e.Row.Cells[1].Text

            }

        }

//行命令

        protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

        {

            if (e.CommandName == "del")

            {

                string str = e.CommandArgument.ToString();

                BIL.teacherinfo.deleteUse(str);

                BindData();

            }

            else if (e.CommandName == "add")

            {

                Response.Redirect("addUser.aspx");

            }

            else if (e.CommandName == "ModifyStatus")

            {

                Button Operate = (Button)e.CommandSource;//命令的按钮

                if (Operate.Text == "启用") {

                    Operate.Enabled = true;

               

                }

                else   if (Operate.Text == "禁用")

                {

                    Operate.Enabled = false;

                }            

            }

        }

        //编辑

        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

        {

            GridViewRow gvr = this.GridView1.Rows[e.RowIndex];

            Label str = gvr.FindControl("id1") as Label;

            int id = Convert.ToInt32(str.Text);

            Response.Redirect("UpdateUser.aspx?id=" + id);

        }

        //分页

        protected void GridView1_PageIndexChanging1(object sender, GridViewPageEventArgs e)

        {

            int i = e.NewPageIndex;

            int j = i < 0 ? 0 : i;

            this.GridView1.PageIndex = j;

            BindData();

        }

//查询

        protected void btsearch_Click(object sender, EventArgs e)

        {

            string name = this.txtname.Text.Trim();

            if (name.Length == 0)

            {

                Response.Write("<script>alert('输入查询的用户名！')</script>");

            }

            else

            {

                DataTable dt = BIL.teacherinfo.showUserByname(name);

                if (dt.Rows.Count > 0)

                {

                    this.GridView1.DataSource = dt;

                    this.GridView1.DataBind();

                }

                else

                {

                    Response.Write("<script>alert('对不起，没有查到！！！！')</script>");

                }

            }

        }

        //选项变化

        protected void CheckBox2_CheckedChanged(object sender, EventArgs e)

        {

            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)

            {

                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

                if (CheckBox2.Checked == true)

                {

                    cbox.Checked = true;

                }

                else

                {

                    cbox.Checked = false;

                }

            }

        }

        //导出Excel

        protected void Btimport_Click(object sender, EventArgs e)

        {

         

        }

//这个重载方法必须有，不然导出excel时引发异常

        public override void VerifyRenderingInServerForm(Control control)

        {

        }

        protected void btcancel_Click(object sender, EventArgs e)

        {

            CheckBox2.Checked = false;

            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)

            {

                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

                cbox.Checked = false;

            }

        }

       //批量删除

        protected void Btdel_Click(object sender, EventArgs e)

        {

            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)

            {

                //应用FindControl方法查找GridView控件中id值为CheckBox1的CheckBox控件

                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");

                //判断GridView控件中CheckBox控件是否被选中

                if (cbox.Checked == true)

                {

                    string b = ((CheckBox)GridView1.Rows[i].FindControl("CheckBox1")).Attributes["ItemID"];

                    int a = BIL.teacherinfo.deleteUse(b); 

                }

            }

            BindData();

        }

//数据导出到Excel

        protected void Btimport_Click1(object sender, EventArgs e)

        {

            Response.Clear();

            Response.Buffer = true;

            Response.Charset = "GB2312";

            Response.AppendHeader("Content-Disposition", "attachment;filename=Message.xls");

            Response.ContentEncoding = System.Text.Encoding.UTF8;

            Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。

            System.IO.StringWriter oStringWriter = new System.IO.StringWriter();

            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);

            this.GridView1.RenderControl(oHtmlTextWriter);

            Response.Output.Write(oStringWriter.ToString());

            Response.Flush();

            Response.End();

        }

B----部分页面前台代码

    <div align="center">

        用户信息<br />

        输入用户姓名：

        <asp:TextBox ID="txtname" runat="server"></asp:TextBox>

        <asp:Button ID="btsearch" runat="server" Text="查询" OnClick="btsearch_Click" />

        <asp:Button ID="Btdel" runat="server" Text="批量删除" OnClick="Btdel_Click" />

        <%--<asp:Button ID="btall" runat="server" Text="全选" onclick="btall_Click"></asp:Button>--%>

        <asp:Button ID="btcancel" runat="server" Text="取消" OnClick="btcancel_Click"></asp:Button>

        <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged"

            Text="全选" Width="56px" />

        <asp:GridView ID="GridView1" runat="server" Width="630px" AutoGenerateColumns="False"

            OnRowCommand="GridView1_RowCommand" OnRowDataBound="GridView1_RowDataBound" Style="margin-left: 0px"

            Height="98px" AllowPaging="True" PageSize="2" OnRowUpdating="GridView1_RowUpdating"

            OnPageIndexChanging="GridView1_PageIndexChanging1">

            <Columns>

              <%--  <asp:TemplateField HeaderText="勾选">

                    <ItemTemplate>

                        <asp:CheckBox ID="CheckBox1" runat="server" Font-Size="9pt" Width="9px" />

                    </ItemTemplate>

                </asp:TemplateField>--%>

                  <asp:TemplateField HeaderText="勾选">

                                <ItemTemplate>

                                    <asp:CheckBox ID="CheckBox1" runat="server" Font-Size="9pt" Width="9px" />

                                </ItemTemplate>

                            </asp:TemplateField>

                <asp:TemplateField HeaderText="用户编号">

                    <EditItemTemplate>

                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("userid") %>'></asp:TextBox>

                    </EditItemTemplate>

                    <ItemTemplate>

                        <asp:Label ID="id1" runat="server" Text='<%# Bind("userid") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="用户姓名">

                    <EditItemTemplate>

                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("username") %>'></asp:TextBox>

                    </EditItemTemplate>

                    <ItemTemplate>

                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("username") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="性别">

                    <EditItemTemplate>

                        <asp:TextBox ID="txtsex" runat="server" Text='<%# Bind("sex") %>'></asp:TextBox>

                    </EditItemTemplate>

                    <ItemTemplate>

                        <asp:Label ID="lbsex" runat="server" Text='<%# Bind("sex") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="更改状态">

                            <ItemTemplate>

                                <asp:Button ID="ModifyStatus" runat="server" CommandArgument='<%# Eval("userid") %>'

                                    CommandName="ModifyStatus" />

                            </ItemTemplate>

                        </asp:TemplateField>

                <asp:TemplateField HeaderText="选中状态">

                            <ItemTemplate>

                                <asp:CheckBox ID="ischecked" runat="server" />

                            </ItemTemplate>

                        </asp:TemplateField>

                       <asp:HyperLinkField DataNavigateUrlFields="userid" DataNavigateUrlFormatString="alluser.aspx?userid={0}"

                                HeaderText="修改" Text="修改" />  

                <asp:TemplateField HeaderText="修改用户信息">

                    <ItemTemplate>

                        <asp:ImageButton ID="btupdate" runat="server" Text="修改" CommandName="update" CommandArgument='<%# Eval("userid ") %>'

                            ImageUrl="~/LinkButtonImage/编辑.jpg" />

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="删除用户信息">

                    <ItemTemplate>

                        <asp:ImageButton ID="btdel" runat="server" Text="删除" CommandName="del" CommandArgument='<%# Eval("userid") %>'

                            ImageUrl="~/LinkButtonImage/删除.jpg" OnClientClick='return confirm("确实要删除吗？")' />

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="添加新用户">

                    <ItemTemplate>

                        <asp:ImageButton ID="btadd" runat="server" Text="新建" CommandName="add" ImageUrl="~/LinkButtonImage/处理.jpg" />

                    </ItemTemplate>

                </asp:TemplateField>

            </Columns>

            <PagerTemplate>

                第<asp:Label ID="lb_current" runat="server" Text='<%#((GridView)Container.Parent.Parent).PageIndex+1%>'></asp:Label>页

                共<asp:Label ID="lb_total" runat="server" Text='<%#((GridView)Container.Parent.Parent).PageCount%>'></asp:Label>页

                <asp:LinkButton ID="LinkButton1" runat="server" CommandName="Page" CommandArgument="First">首页</asp:LinkButton>

                <asp:LinkButton ID="LinkButton2" runat="server" CommandName="Page" CommandArgument="Prev">上页</asp:LinkButton>

                <asp:LinkButton ID="LinkButton3" runat="server" CommandName="Page" CommandArgument="Next">下页</asp:LinkButton>

                <asp:LinkButton ID="LinkButton4" runat="server" CommandName="Page" CommandArgument="Last">末页</asp:LinkButton>

            </PagerTemplate>

        </asp:GridView>

        <%=Usercount %>

        <table border="0" cellpadding="0" cellspacing="0" align="center">

                        <tr>

                            <td align="right" style="width: 73px">

                               用户编号：</td>

                            <td style="width: 100px">

                    <asp:TextBox ID="txtid" runat="server" Width="160px" CssClass="search"></asp:TextBox></td>

                            <td style="width: 100px">

                            </td>

                         

                        </tr>

                        <tr>

                            <td align="right" style="width: 73px">

                                <asp:Label ID="Label2" runat="server" Text="姓名：" Width="69px"></asp:Label></td>

                            <td style="width: 100px">

                    <asp:TextBox ID="txtnames" runat="server" Width="160px"></asp:TextBox></td>

                            <td align="center" style="width: 100px">

                                 </td>

                        </tr>

                        <tr>

                            <td align="right" style="width: 73px">

                                <asp:Label ID="Label3" runat="server" Text="性别：" Width="88px" Height="16px"></asp:Label></td>

                            <td style="width: 100px">

                    <asp:TextBox ID="txtsex" runat="server" Width="160px"></asp:TextBox></td>

                            <td style="width: 100px">

                            </td>

                        </tr>

                        <tr>

                            <td style="width: 73px">

                            </td>

                            <td align="center" style="width: 100px">

                                 <table border="0" cellpadding="0" cellspacing="0">

                                    <tr>

                                        <td style="width: 100px">

                                            <asp:Button ID="btnEdit" runat="server" OnClick="btnEdit_Click"

                        Text="修改" Width="59px" CssClass="login" /></td>

                                        <td style="width: 100px">

                    <asp:Button ID="btnCancel" runat="server" OnClick="btnCancel_Click"

                        Text="重置" Width="63px" CausesValidation="False" CssClass="login" /></td>

                                    </tr>

                                </table>

                            </td>

                            <td align="left" style="width: 100px">

                                 </td>

                        </tr>

                    </table>

        <input id="btnSelectOrg"  runat="server" class="commonButton" style="width: 25px" type="button" value="..." onclick="return btnSelectOrg_onclick()" />

 <asp:Button ID="Button1" runat="server" Text="测试"   OnClientClick="test3();" />

        <asp:Button ID="Btimport" runat="server" Text="导出到Excel"

            onclick="Btimport_Click1"  ToolTip="请允许弹出式页面"/>

        </asp:Button>

    </div>