GridView绝技和CheckBox结合、鼠标到某一行改变背景色(2种方法)、删除时弹出确认对话框

最新推荐文章于 2020-12-31 05:05:00 发布

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最新推荐文章于 2020-12-31 05:05:00 发布

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文章标签： asp server button object string dataset

本文介绍ASP.NET中GridView控件的高级用法，包括与CheckBox结合实现全选、取消及批量删除功能，通过OnRowDataBound事件改变行背景色提高交互体验，以及实现删除操作时的确认对话框。

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5.GridView和CheckBox结合：

效果图：

后台代码：

1using System;

2using System.Data;

3using System.Configuration;

4using System.Web;

5using System.Web.Security;

6using System.Web.UI;

7using System.Web.UI.WebControls;

8using System.Web.UI.WebControls.WebParts;

9using System.Web.UI.HtmlControls;

10using System.Data.SqlClient;

12public partial class Default5 : System.Web.UI.Page

13{

14 //清清月儿http://blog.youkuaiyun.com/21aspnet

15 SqlConnection sqlcon;

16 string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";

17 protected void Page_Load(object sender, EventArgs e)

18 {

19 if (!IsPostBack)

20 {

21 bind();

22 }

23 }

24 protected void CheckBox2_CheckedChanged(object sender, EventArgs e)

25 {

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

27 {

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

29 if (CheckBox2.Checked == true)

30 {

31 cbox.Checked = true;

32 }

33 else

34 {

35 cbox.Checked = false;

36 }

37 }

38 }

39 protected void Button2_Click(object sender, EventArgs e)

40 {

41 sqlcon = new SqlConnection(strCon);

42 SqlCommand sqlcom;

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

44 {

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

46 if (cbox.Checked == true)

47 {

49 string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[i].Value + "'";

50 sqlcom = new SqlCommand(sqlstr, sqlcon);

51 sqlcon.Open();

52 sqlcom.ExecuteNonQuery();

53 sqlcon.Close();

54 }

55 }

56 bind();

57 }

58 protected void Button1_Click(object sender, EventArgs e)

59 {

60 CheckBox2.Checked = false;

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

62 {

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

64 cbox.Checked = false;

65 }

66 }

67 public void bind()

68 {

69 string sqlstr = "select top 5 * from 飞狐工作室";

70 sqlcon = new SqlConnection(strCon);

71 SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);

72 DataSet myds = new DataSet();

73 sqlcon.Open();

74 myda.Fill(myds, "tb_Member");

75 GridView1.DataSource = myds;

76 GridView1.DataKeyNames = new string[] { "身份证号码" };

77 GridView1.DataBind();

78 sqlcon.Close();

79 }

80}

前台主要代码：

1<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"

2 CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">

3 <FooterStyle BackColor="White" ForeColor="#000066" />

4 <Columns>

5 <asp:TemplateField>

6 <ItemTemplate>

7 <asp:CheckBox ID="CheckBox1" runat="server" />

8 </ItemTemplate>

9 </asp:TemplateField>

10 <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />

11 <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>

13 <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>

15 </Columns>

16 <RowStyle ForeColor="#000066" />

17 <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

18 <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

19 <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

20</asp:GridView>

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

22 Text="全选" />

23<asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />

24<asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="删除" OnClick="Button2_Click" />

6.鼠标移到GridView某一行时改变该行的背景色方法一：

效果图：

做法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

1protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

3 int i;

4 //执行循环，保证每条数据都可以更新

5 for (i = 0; i < GridView1.Rows.Count; i++)

6 {

7 //首先判断是否是数据行

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

9 {

10 //当鼠标停留时更改背景色

11 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");

12 //当鼠标移开时还原背景色

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

14 }

15 }

17}

前台代码：

1<html xmlns="http://www.w3.org/1999/xhtml" >

2<head runat="server">

3 <title>实现鼠标划过改变GridView的行背景色清清月儿http://blog.youkuaiyun.com/21aspnet </title>

4</head>

5<body>

6 <form id="form1" runat="server">

7 <div>

8 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份证号码"

9 DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">

10 <Columns>

11 <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />

12 <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />

13 <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />

14 <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />

15 </Columns>

16 <FooterStyle BackColor="White" ForeColor="#000066" />

17 <RowStyle ForeColor="#000066" />

18 <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

19 <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

20 <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

21 </asp:GridView>

22 <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"

23 SelectCommand="SELECT top 5 [身份证号码], [姓名], [员工性别], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

25 </div>

26 </form>

27</body>

28</html>

7.鼠标移到GridView某一行时改变该行的背景色方法二：

效果图：

做法：和上面的一样就是代码不同

1protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

3 //int i;

4 /**/////执行循环，保证每条数据都可以更新

5 //for (i = 0; i < GridView1.Rows.Count; i++)

6 //{

7 // //首先判断是否是数据行

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

9 // {

10 // //当鼠标停留时更改背景色

11 // e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");

12 // //当鼠标移开时还原背景色

13 // e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");

14 // }

15 //}

16 //如果是绑定数据行

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

18 {

19 //鼠标经过时，行背景色变

20 e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");

21 //鼠标移出时，行背景色变

22 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

23 }

24}

8.GridView实现删除时弹出确认对话框：

效果图：

实现方法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

1protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

3 //如果是绑定数据行

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

5 {

6 if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)

7 {

8 ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除："" + e.Row.Cells[1].Text + ""吗?')");

9 }

10 }

11}