[ZT]DataGrid中TextBox的onChange事件解决方法
微软的控件功能很强,开发起来容易上手,可是需求总是不能满足的。所以我们为了满足不同需求,会重写一控件.
就比如DataGrid中TextBox的onChange事件.DataGrid捕获不到,TextBox和Button不一样.Button有commandName属性,我们可以用commandName属性来区别触发的事件.如果要实现TextBox的onChange事件让DataGrid捕获,那就需要事件提升,现在有2种解决方案第一种,重写TextBox控件
前台代码
1
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
2<%@ Register Namespace ="Abin.Controls" TagPrefix="Abin"%>
3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<html xmlns="http://www.w3.org/1999/xhtml" >
6<head runat="server">
7 <title>无标题页</title>
8</head>
9<body>
10 <form id="form1" runat="server">
11 <div>
12 <asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False"
13 OnItemCommand="DataGrid1_ItemCommand">
14 <Columns>
15 <asp:TemplateColumn>
16 <ItemTemplate>
17 <Abin:CommandTextBox ID="TextBox1" runat="server" CommandName="OnChange" AutoPostBack="True"></Abin:CommandTextBox>
18 </ItemTemplate>
19 <HeaderTemplate>
20 工号
21 </HeaderTemplate>
22 </asp:TemplateColumn>
23 <asp:TemplateColumn>
24 <ItemTemplate>
25 <Abin:CommandTextBox ID="TextBox2" runat="server" BackColor="LightGray" ReadOnly="True"></Abin:CommandTextBox>
26 </ItemTemplate>
27 <HeaderTemplate>
28 名字
29 </HeaderTemplate>
30 </asp:TemplateColumn>
31 </Columns>
32 </asp:DataGrid></div>
33 </form>
34</body>
35</html>
36
37
1using System;
2using System.Web.UI.WebControls;
3using Abin.Controls;
4
5public partial class Default3 : System.Web.UI.Page
6{
7
#region Page_load
8
protected void Page_Load(object sender, EventArgs e)
9 {
10 if (!IsPostBack)
11 {
12 BindDataGrid();
13
}
14 }
15 #endregion
16
17 #region DataGrid绑定
18 private void BindDataGrid()
19 {
20 DataGrid1.DataSource = new string[] { "Abin", "Abin", "Abin", "Abin", "Abin", "Abin" };
21
22 DataGrid1.DataBind();
23 }
24 #endregion
25
26 #region GetResult
27 private string GetResult(string strName)
28 {
29 if (strName == "033221")
30 {
31 return "阿滨";
32 }
33 else if (strName == "033222")
34 {
35 return "小猪";
36 }
37 else if (strName.Length == 0)
38 {
39 return null;
40 }
41 else
42 {
43 return "沒有找到";
44 }
45 }
46 #endregion
47
48 #region DataGrid1_ItemCommand
49 protected void DataGrid1_ItemCommand(object source, DataGridCommandEventArgs e)
50 {
51 if (e.CommandName == "OnChange")
52 {
53 string currenttxtName = null;
54
55 int index = e.Item.ItemIndex;
56
57 CommandTextBox ctb = this.DataGrid1.Items[index].FindControl("TextBox1") as CommandTextBox;
58
59 if (ctb != null)
60 {
61 currenttxtName = ctb.Text;
62 }
63
64 ctb = this.DataGrid1.Items[index].FindControl("TextBox2") as CommandTextBox;
65
66 if (ctb != null)
67 {
68 ctb.Text = GetResult(currenttxtName);
69 }
70 }
71 }
72 #endregion
73
74
75
}
76
77
78
79重写TextBox类
80
81
82
83using System;
84using System.Web.UI.WebControls;
85using System.ComponentModel;
86/// <summary>
87/// CommandTextBox 的摘要说明
88/// </summary>
89///
90namespace Abin.Controls
91{
92 public class CommandTextBox : TextBox
93 {
94
属性
110
111 事件冒泡
118
119 重写
132 }
133}
134
135
136
137
这样就可以实现捕获了，现在我们用第2种方法来实现
前台代码
1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default4.aspx.cs" Inherits="Default4" %>
2
3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<html xmlns="http://www.w3.org/1999/xhtml" >
6<head runat="server">
7 <title>无标题页</title>
8</head>
9<body>
10 <form id="form1" runat="server">
11 <div>
12 <asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False">
13 <Columns>
14 <asp:TemplateColumn>
15 <ItemTemplate>
16 <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
17 </ItemTemplate>
18 <HeaderTemplate>
19 工号
20 </HeaderTemplate>
21 </asp:TemplateColumn>
22 <asp:TemplateColumn>
23 <ItemTemplate>
24 <asp:TextBox ID="TextBox2" runat="server" AutoPostBack="True" BackColor="LightGray"></asp:TextBox>
25 </ItemTemplate>
26 <HeaderTemplate>
27 名字
28 </HeaderTemplate>
29 </asp:TemplateColumn>
30 </Columns>
31 </asp:DataGrid></div>
32 </form>
33</body>
34</html>
35
36
1using System;
2using System.Data;
3using System.Configuration;
4using System.Collections;
5using System.Web;
6using System.Web.Security;
7using System.Web.UI;
8using System.Web.UI.WebControls;
9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12public partial class Default4 : System.Web.UI.Page
13{
14 #region Page_load
15 protected void Page_Load(object sender, EventArgs e)
16 {
17 if (!IsPostBack)
18 {
19 BindDataGrid();
20 }
21 }
22 #endregion
23
24 #region DataGrid绑定
25 private void BindDataGrid()
26 {
27 DataGrid1.DataSource = new string[] { "Abin", "Abin", "Abin", "Abin", "Abin", "Abin" };
28
29 DataGrid1.DataBind();
30 }
31 #endregion
32
33 #region GetResult
34 private string GetResult(string strName)
35 {
36 if (strName == "033221")
37 {
38 return "阿滨";
39 }
40 else if (strName == "033222")
41 {
42 return "小猪";
43 }
44 else if (strName.Length == 0)
45 {
46 return null;
47 }
48 else
49 {
50 return "沒有找到";
51 }
52 }
53 #endregion
54
55 #region TextBox1_TextChanged
56 protected void TextBox1_TextChanged(object sender, EventArgs e)
57 {
58 TextBox tb = (TextBox)sender;
59
60 if (tb != null)
61 {
62 TableCell cell = tb.Parent as TableCell;
63
64 if (cell != null)
65 {
66 DataGridItem dgi = cell.Parent as DataGridItem;
67
68 string currenttxtName = null;
69
70 int index = dgi.ItemIndex;
71
72 tb = DataGrid1.Items[index].FindControl("TextBox1") as TextBox;
73
74 if (tb != null)
75 {
76 TextBox tb1 = DataGrid1.Items[index].FindControl("TextBox2") as TextBox;
77
78 tb1.Text = GetResult(tb.Text);
79 }
80 }
81 }
82
83 }
84 #endregion
85}
86
87
2种方法都实现了。代码很简单。我就不讲解了.
完整的代码下载
https://files.cnblogs.com/mextb1860/WebSite2.zip
就比如DataGrid中TextBox的onChange事件.DataGrid捕获不到,TextBox和Button不一样.Button有commandName属性,我们可以用commandName属性来区别触发的事件.如果要实现TextBox的onChange事件让DataGrid捕获,那就需要事件提升,现在有2种解决方案第一种,重写TextBox控件
前台代码
1
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>2
<%@ Register Namespace ="Abin.Controls" TagPrefix="Abin"%>3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<html xmlns="http://www.w3.org/1999/xhtml" >6
<head runat="server">7
<title>无标题页</title>8
</head>9
<body>10
<form id="form1" runat="server">11
<div>12
<asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False"13
OnItemCommand="DataGrid1_ItemCommand">14
<Columns>15
<asp:TemplateColumn>16
<ItemTemplate>17
<Abin:CommandTextBox ID="TextBox1" runat="server" CommandName="OnChange" AutoPostBack="True"></Abin:CommandTextBox>18
</ItemTemplate>19
<HeaderTemplate>20
工号21
</HeaderTemplate>22
</asp:TemplateColumn>23
<asp:TemplateColumn>24
<ItemTemplate>25
<Abin:CommandTextBox ID="TextBox2" runat="server" BackColor="LightGray" ReadOnly="True"></Abin:CommandTextBox>26
</ItemTemplate>27
<HeaderTemplate>28
名字29
</HeaderTemplate>30
</asp:TemplateColumn>31
</Columns>32
</asp:DataGrid></div>33
</form>34
</body>35
</html>36
37
后台代码
1
using System;2
using System.Web.UI.WebControls;3
using Abin.Controls;4
5
public partial class Default3 : System.Web.UI.Page6
{
7
#region Page_load8
protected void Page_Load(object sender, EventArgs e)9
{10
if (!IsPostBack)11
{12
BindDataGrid();13
}14
}15
#endregion16
17
#region DataGrid绑定18
private void BindDataGrid()19
{20
DataGrid1.DataSource = new string[] { "Abin", "Abin", "Abin", "Abin", "Abin", "Abin" };21
22
DataGrid1.DataBind();23
}24
#endregion25
26
#region GetResult27
private string GetResult(string strName)28
{29
if (strName == "033221")30
{31
return "阿滨";32
}33
else if (strName == "033222")34
{35
return "小猪";36
}37
else if (strName.Length == 0)38
{39
return null;40
}41
else42
{43
return "沒有找到";44
}45
}46
#endregion47
48
#region DataGrid1_ItemCommand49
protected void DataGrid1_ItemCommand(object source, DataGridCommandEventArgs e)50
{51
if (e.CommandName == "OnChange")52
{53
string currenttxtName = null;54
55
int index = e.Item.ItemIndex;56
57
CommandTextBox ctb = this.DataGrid1.Items[index].FindControl("TextBox1") as CommandTextBox;58
59
if (ctb != null)60
{61
currenttxtName = ctb.Text;62
}63
64
ctb = this.DataGrid1.Items[index].FindControl("TextBox2") as CommandTextBox;65
66
if (ctb != null)67
{68
ctb.Text = GetResult(currenttxtName);69
}70
}71
}72
#endregion73
74
75
}76
77
78
79
重写TextBox类80
81
82
83
using System;84
using System.Web.UI.WebControls;85
using System.ComponentModel;86
/// <summary>87
/// CommandTextBox 的摘要说明88
/// </summary>89
/// 90
namespace Abin.Controls91
{92
public class CommandTextBox : TextBox93
{94
属性110
111
事件冒泡118
119
重写132
}133
}134
135
136
137
这样就可以实现捕获了，现在我们用第2种方法来实现
前台代码
1
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default4.aspx.cs" Inherits="Default4" %>2
3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<html xmlns="http://www.w3.org/1999/xhtml" >6
<head runat="server">7
<title>无标题页</title>8
</head>9
<body>10
<form id="form1" runat="server">11
<div>12
<asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False">13
<Columns>14
<asp:TemplateColumn>15
<ItemTemplate>16
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>17
</ItemTemplate>18
<HeaderTemplate>19
工号20
</HeaderTemplate>21
</asp:TemplateColumn>22
<asp:TemplateColumn>23
<ItemTemplate>24
<asp:TextBox ID="TextBox2" runat="server" AutoPostBack="True" BackColor="LightGray"></asp:TextBox>25
</ItemTemplate>26
<HeaderTemplate>27
名字28
</HeaderTemplate>29
</asp:TemplateColumn>30
</Columns>31
</asp:DataGrid></div>32
</form>33
</body>34
</html>35
36
后台代码
1
using System;2
using System.Data;3
using System.Configuration;4
using System.Collections;5
using System.Web;6
using System.Web.Security;7
using System.Web.UI;8
using System.Web.UI.WebControls;9
using System.Web.UI.WebControls.WebParts;10
using System.Web.UI.HtmlControls;11
12
public partial class Default4 : System.Web.UI.Page13
{14
#region Page_load15
protected void Page_Load(object sender, EventArgs e)16
{17
if (!IsPostBack)18
{19
BindDataGrid();20
}21
}22
#endregion23
24
#region DataGrid绑定25
private void BindDataGrid()26
{27
DataGrid1.DataSource = new string[] { "Abin", "Abin", "Abin", "Abin", "Abin", "Abin" };28
29
DataGrid1.DataBind();30
}31
#endregion32
33
#region GetResult34
private string GetResult(string strName)35
{36
if (strName == "033221")37
{38
return "阿滨";39
}40
else if (strName == "033222")41
{42
return "小猪";43
}44
else if (strName.Length == 0)45
{46
return null;47
}48
else49
{50
return "沒有找到";51
}52
}53
#endregion54
55
#region TextBox1_TextChanged56
protected void TextBox1_TextChanged(object sender, EventArgs e)57
{58
TextBox tb = (TextBox)sender;59
60
if (tb != null)61
{62
TableCell cell = tb.Parent as TableCell;63
64
if (cell != null)65
{66
DataGridItem dgi = cell.Parent as DataGridItem;67
68
string currenttxtName = null;69
70
int index = dgi.ItemIndex;71
72
tb = DataGrid1.Items[index].FindControl("TextBox1") as TextBox;73
74
if (tb != null)75
{76
TextBox tb1 = DataGrid1.Items[index].FindControl("TextBox2") as TextBox;77
78
tb1.Text = GetResult(tb.Text);79
}80
}81
}82
83
}84
#endregion85
}86
87
2种方法都实现了。代码很简单。我就不讲解了.
完整的代码下载
https://files.cnblogs.com/mextb1860/WebSite2.zip
