[轉貼] GridView72大絕技 #1

快速預覽：
01 GridView無代碼分頁排序
02 GridView選中，編輯，取消，刪除
03 GridView正反雙向排序
04 GridView和下拉菜單DropDownList結合
05 GridView和CheckBox結合
06 鼠標移到GridView某一行時改變該行的背景色方法一
07 鼠標移到GridView某一行時改變該行的背景色方法二
08 GridView實現刪除時彈出確認對話框
09 GridView實現自動編號
10 GridView實現自定義時間貨幣等字符串格式
11 GridView實現用「...」代替超長字符串
12 GridView一般換行與強制換行
13 GridView顯示隱藏某一列
14 GridView彈出新頁面/彈出新窗口
15 GridView固定表頭(不用javascript只用CSS，2行代碼，很好用)
16 GridView合併表頭多重表頭無錯完美版（以合併3列3行舉例）
17 GridView突出顯示某一單元格（例如金額低於多少，分數不及格等）
18 GridView加入自動求和求平均值小計
19 GridView數據導入Excel/Excel數據讀入GridView

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1.GridView無代碼分頁排序：

效果圖：

1.AllowSorting設為True，aspx代碼中是AllowSorting="True"；
2.默認1頁10條，如果要修改每頁條數，修改PageSize即可，在aspx代碼中是PageSize="12"。
3.默認的是單向排序的，右擊GridView彈出「屬性」，選擇AllowSorting為True即可。

2.GridView選中，編輯，取消，刪除：

效果圖：

後台代碼：
你可以使用sqlhelper,本文沒用。代碼如下：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{

//清清月兒http://blog.csdn.net/21aspnet 
    SqlConnection sqlcon;
    SqlCommand sqlcom;
    string strCon = "Data Source=(local);Database=數據庫名;Uid=帳號;Pwd=密碼";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bind();
        }
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        bind();
    }

//刪除
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlcon = new SqlConnection(strCon);
        sqlcom = new SqlCommand(sqlstr,sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        bind();
    }

//更新
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        sqlcon = new SqlConnection(strCon);
        string sqlstr = "update 表 set 字段1='"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"
            + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
            + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlcom=new SqlCommand(sqlstr,sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        GridView1.EditIndex = -1;
        bind();
    }

//取消
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        bind();
    }

//綁定
    public void bind()
    {
        string sqlstr = "select * from 表";
        sqlcon = new SqlConnection(strCon);
        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds = new DataSet();
        sqlcon.Open();
        myda.Fill(myds, "表");
        GridView1.DataSource = myds;
        GridView1.DataKeyNames = new string[] { "id" };//主鍵
        GridView1.DataBind();
        sqlcon.Close();
    }
}

前台主要代碼：
                            ... ...
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
                        ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
                        <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
                        <Columns>
                            <asp:BoundField DataField="身份證號碼" HeaderText="用戶ID" ReadOnly="True" />
                            <asp:BoundField DataField="姓名" HeaderText="用戶姓名" />
                            <asp:BoundField DataField="員工性別" HeaderText="性別" />
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                            <asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
                            <asp:CommandField HeaderText="編輯" ShowEditButton="True" />
                            <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" />
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>

3.GridView正反雙向排序：
效果圖：點姓名各2次的排序，點其他也一樣可以。

後台代碼：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default3 : System.Web.UI.Page
{

//清清月兒的博客http://blog.csdn.net/21aspnet 
    SqlConnection sqlcon;
    string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            ViewState["SortOrder"] = "身份證號碼";
            ViewState["OrderDire"] = "ASC";
            bind();
        }
    }
    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
    {
        string sPage = e.SortExpression;
        if (ViewState["SortOrder"].ToString() == sPage)
        {
            if (ViewState["OrderDire"].ToString() == "Desc")
                ViewState["OrderDire"] = "ASC";
            else
                ViewState["OrderDire"] = "Desc";
        }
        else
        {
            ViewState["SortOrder"] = e.SortExpression;
        }
        bind();
    }

    public void bind()
    {
       
        string sqlstr = "select top 5 * from 飛狐工作室";
        sqlcon = new SqlConnection(strCon);
        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds = new DataSet();
        sqlcon.Open();
        myda.Fill(myds, "飛狐工作室");
        DataView view = myds.Tables["飛狐工作室"].DefaultView;
        string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];
        view.Sort = sort;
        GridView1.DataSource = view;
        GridView1.DataBind();
        sqlcon.Close();
    }
}

前台主要代碼：
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                        CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                             <asp:BoundField DataField="身份證號碼" HeaderText="用戶ID" SortExpression="身份證號碼" />
                            <asp:BoundField DataField="姓名" HeaderText="用戶姓名" SortExpression="姓名"/>
                            <asp:BoundField DataField="員工性別" HeaderText="性別" SortExpression="員工性別"/>
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                               
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>

 

4.GridView和下拉菜單DropDownList結合：

效果圖：

後台代碼：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default4 : System.Web.UI.Page
{
    SqlConnection sqlcon;
    string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
    protected void Page_Load(object sender, EventArgs e)
    {
        DropDownList ddl;
        if (!IsPostBack)
        {
            string sqlstr = "select top 5 * from 飛狐工作室";
            sqlcon = new SqlConnection(strCon);
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
            DataSet myds = new DataSet();
            sqlcon.Open();
            myda.Fill(myds, "飛狐工作室");
            GridView1.DataSource = myds;
            GridView1.DataBind();
            for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
            {
                DataRowView mydrv = myds.Tables["飛狐工作室"].DefaultView[i];
                if (Convert.ToString(mydrv["員工性別"]).Trim() == "True")
                {
                    ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                    ddl.SelectedIndex = 0;
                }
                if (Convert.ToString(mydrv["員工性別"]).Trim() == "False")
                {
                    ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
                    ddl.SelectedIndex = 1;
                }
            }
            sqlcon.Close();
        }
    }
    public SqlDataReader ddlbind()
    {
        string sqlstr = "select distinct 員工性別 from 飛狐工作室";
        sqlcon = new SqlConnection(strCon);
        SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);
        sqlcon.Open();
        return sqlcom.ExecuteReader();
    }

前台主要代碼：
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                        CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                             <asp:BoundField DataField="身份證號碼" HeaderText="用戶ID" SortExpression="身份證號碼" />
                            <asp:BoundField DataField="姓名" HeaderText="用戶姓名" SortExpression="姓名"/>
                            <asp:TemplateField HeaderText="員工性別">
                                <ItemTemplate>
                                    <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="員工性別" DataTextField="員工性別">
                                    </asp:DropDownList>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                               
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>

5.GridView和CheckBox結合：

效果圖：

後台代碼：

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Default5 : System.Web.UI.Page
{
//清清月兒http://blog.csdn.net/21aspnet
    SqlConnection sqlcon;
    string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bind();
        }
    }
    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;
            }
        }
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        sqlcon = new SqlConnection(strCon);
        SqlCommand sqlcom;
        for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
        {
            CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
            if (cbox.Checked == true)
            {

                string sqlstr = "delete from 飛狐工作室 where 身份證號碼='" + GridView1.DataKeys[i].Value + "'";
                sqlcom = new SqlCommand(sqlstr, sqlcon);
                sqlcon.Open();
                sqlcom.ExecuteNonQuery();
                sqlcon.Close();
            }
        }
        bind();
    }
    protected void Button1_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;
        }
    }
    public void bind()
    {
        string sqlstr = "select top 5 * from 飛狐工作室";
        sqlcon = new SqlConnection(strCon);
        SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds = new DataSet();
        sqlcon.Open();
        myda.Fill(myds, "tb_Member");
        GridView1.DataSource = myds;
        GridView1.DataKeyNames = new string[] { "身份證號碼" };
        GridView1.DataBind();
        sqlcon.Close();
    }
}

前台主要代碼：

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
                        CellPadding="3" Font-Size="9pt"  BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                             <asp:TemplateField>
                                <ItemTemplate>
                                    <asp:CheckBox ID="CheckBox1" runat="server" />
                                </ItemTemplate>
                            </asp:TemplateField>
                             <asp:BoundField DataField="身份證號碼" HeaderText="用戶ID" SortExpression="身份證號碼" />
                            <asp:BoundField DataField="姓名" HeaderText="用戶姓名" SortExpression="姓名"/>
                           
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
                               
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    </asp:GridView>
                     <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged"
                        Text="全選" />
                    <asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />
                    <asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="刪除" OnClick="Button2_Click" />

6.鼠標移到GridView某一行時改變該行的背景色方法一：

效果圖：

做法：
雙擊GridView的OnRowDataBound事件；
在後台的GridView1_RowDataBound()方法添加代碼，最後代碼如下所示：
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        int i;
        //執行循環，保證每條數據都可以更新
        for (i = 0; i < GridView1.Rows.Count; i++)
        {
            //首先判斷是否是數據行
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                //當鼠標停留時更改背景色
                e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
                //當鼠標移開時還原背景色
                e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
            }
        }

    }

前台代碼：
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>實現鼠標劃過改變GridView的行背景色 清清月兒http://blog.csdn.net/21aspnet </title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份證號碼"
            DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
            <Columns>
                <asp:BoundField DataField="身份證號碼" HeaderText="身份證號碼" ReadOnly="True" SortExpression="身份證號碼" />
                <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
                <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />
                <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
            </Columns>
            <FooterStyle BackColor="White" ForeColor="#000066" />
            <RowStyle ForeColor="#000066" />
            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北風貿易ConnectionString1 %>"
            SelectCommand="SELECT top 5 [身份證號碼], [姓名], [員工性別], [家庭住址], [郵政編碼] FROM [飛狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>
   
    </div>
    </form>
</body>
</html>

7.鼠標移到GridView某一行時改變該行的背景色方法二：

效果圖：

做法：和上面的一樣就是代碼不同
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        //int i;
        ////執行循環，保證每條數據都可以更新
        //for (i = 0; i < GridView1.Rows.Count; i++)
        //{
        //    //首先判斷是否是數據行
        //    if (e.Row.RowType == DataControlRowType.DataRow)
        //    {
        //        //當鼠標停留時更改背景色
        //        e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
        //        //當鼠標移開時還原背景色
        //        e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
        //    }
        //}
        //如果是綁定數據行
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            //鼠標經過時，行背景色變
            e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
            //鼠標移出時，行背景色變
            e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");
        }

    }