asp.net|datagrid|訪問|控制項 要在ASP.NET中訪問DataGrid中所有控制項的值，可以遍曆DataGrid中每個控制項：下面就是實現這一功能的aspx代碼和指令碼代碼【VB.NET】：
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="DataGridAccessValues.aspx.vb"
Inherits="aspxWeb.DataGridAccessValues"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
</HEAD>
<body>
<form runat="server" ID="Form1">
<asp:DataGrid id="MyDataGrid" runat="server" Width ="100%" AutoGenerateColumns="False">
<ItemStyle verticalalign="Top"></ItemStyle>
<Columns>
<asp:BoundColumn DataField="Name" HeaderText="Name"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="Age">
<ItemTemplate>
<asp:TextBox id="AgeField" Columns="5" Text='<%# DataBinder.Eval(Container.DataItem,"Age") %>'
runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Graduate">
<ItemTemplate>
<asp:CheckBox id="IsGraduateField" Checked='<%# DataBinder.Eval(Container.DataItem,"IsGraduate") %>'
runat="server"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Skills">
<ItemTemplate>
<asp:CheckBoxList id="CheckBoxList1" runat="server">
<asp:ListItem Value="C#" Selected="true">C#</asp:ListItem>
<asp:ListItem Value="C++">C++</asp:ListItem>
<asp:ListItem Value="VB">VB</asp:ListItem>
<asp:ListItem Value="SQL Server" Selected="true">SQL Server</asp:ListItem>
</asp:CheckBoxList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Experience">
<ItemTemplate>
<asp:RadioButtonList id="RadioButtonList1" runat="server">
<asp:ListItem Value="1">1 Year</asp:ListItem>
<asp:ListItem Value="3">3 Year</asp:ListItem>
<asp:ListItem Value="5" Selected="true">5 Year</asp:ListItem>
<asp:ListItem Value="10">10 Year</asp:ListItem>
</asp:RadioButtonList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Degree">
<ItemTemplate>
<asp:DropDownList id="DropDownList1" runat="server">
<asp:ListItem Value="HighSchool">HighSchool</asp:ListItem>
<asp:ListItem Value="Graduate" Selected="true">Graduate</asp:ListItem>
<asp:ListItem Value="Masters">Masters</asp:ListItem>
<asp:ListItem Value="PHD">PHD</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
<br>
<asp:Button id="GetValues" onclick="GetValues_Click" runat="server" Text="GetValues"></asp:Button>
<br>
<asp:Label id="ResultField" runat="server"></asp:Label>
</form>
</body>
</HTML>
後端代碼：
Imports System.Collections
Public Class DataGridAccessValues
Inherits System.Web.UI.Page
Protected WithEvents MyDataGrid As System.Web.UI.WebControls.DataGrid
Protected WithEvents GetValues As System.Web.UI.WebControls.Button
Protected WithEvents ResultField As System.Web.UI.WebControls.Label
#Region " Web Form設計器產生的程式碼 "
'該調用是 Web Form設計器所必需的。
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: 此方法調用是 Web Form設計器所必需的
'不要使用代碼編輯器修改它。
InitializeComponent()
End Sub
#End Region
Public Sub GetValues_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles GetValues.Click
Dim Result As String = ""
Dim dataGridItem As DataGridItem
For Each dataGridItem In MyDataGrid.Items
Dim Name As String = dataGridItem.Cells(0).Text
Dim AgeField As TextBox = dataGridItem.FindControl("AgeField")
Dim Age As Integer = System.Convert.ToInt64(AgeField.Text).ToString()
Dim IsGraduateField As CheckBox = dataGridItem.FindControl("IsGraduateField")
Dim IsGraduate As Boolean = IsGraduateField.Checked
Dim Skills As String = ""
Dim item As ListItem
Dim CheckBoxList1 As CheckBoxList = dataGridItem.FindControl("CheckBoxList1")
For Each item In CheckBoxList1.Items
If item.Selected Then
Skills = Skills + item.Value + ","
End If
Next
Skills = Skills.TrimEnd(",")
Dim RadioButtonList1 As RadioButtonList = dataGridItem.FindControl("RadioButtonList1")
Dim Experience As String = RadioButtonList1.SelectedItem.Text
Dim DropDownList1 As DropDownList = dataGridItem.FindControl("DropDownList1")
Dim Degree As String = DropDownList1.SelectedItem.Text
Result = Result + Name
Result = Result + "[年齡：" + Age.ToString() + "]"
Result += " "
If IsGraduate Then
Result += "已經畢業 , "
Else
Result += "沒有畢業 , "
End If
Result += "技能：" + Skills + " , "
Result += "經驗： " + Experience + " , 和 "
Result += "學位： " + Degree + "。"
Result += "<br>"
Next
ResultField.Text = Result
End Sub
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此處放置初始化頁的使用者代碼
If Not Page.IsPostBack Then
Dim data As ArrayList = New ArrayList()
data.Add(New Person("Net_lover", 33, True))
data.Add(New Person("孟子E章", 28, True))
data.Add(New Person("精彩世界", 20, False))
data.Add(New Person("XML開發", 27, True))
MyDataGrid.DataSource = data
MyDataGrid.DataBind()
End If
End Sub
End Class
Public Class Person
Private _Name As String
Private _Age As Integer
Private _IsGraduate As Boolean
Public Sub New(ByVal Name As String, ByVal Age As Integer, ByVal IsGraduate As Boolean)
_Name = Name
_Age = Age
_IsGraduate = IsGraduate
End Sub
Public Property Name() As String
Get
Return _Name
End Get
Set(ByVal Value As String)
_Name = Value
End Set
End Property
Public Property Age() As Integer
Get
Return _Age
End Get
Set(ByVal Value As Integer)
_Age = Value
End Set
End Property
Public Property IsGraduate() As Boolean
Get
Return _IsGraduate
End Get
Set(ByVal Value As Boolean)
_IsGraduate = Value
End Set
End Property
End Class
C#例子代碼：
<%@ Page Language="C#" %>
<%@ import Namespace="System.Collections" %>
<script runat="server">
void Page_Load(Object sender, EventArgs e) {
if(!Page.IsPostBack){
ArrayList data = new ArrayList();
data.Add(new Person("Tom",33,true));
data.Add(new Person("Jhon",39,false));
data.Add(new Person("Mark",20,false));
data.Add(new Person("Linda",27,true));
MyDataGrid.DataSource = data;
MyDataGrid.DataBind();
}
}
void GetValues_Click(Object sender, EventArgs e) {
String Result = "";
foreach(DataGridItem dataGridItem in MyDataGrid.Items){
//Get name from cell[0]
String Name = dataGridItem.Cells[0].Text;
//Get text from textbox in cell[1]
String Age = ((TextBox)dataGridItem.FindControl("AgeField")).Text;
//Get Checked property of Checkbox control
bool IsGraduate = ((CheckBox)dataGridItem.FindControl("IsGraduateField")).Checked;
// get Values from Checkboxlist
String Skills = "";
foreach(ListItem item in ((CheckBoxList)dataGridItem.FindControl("CheckBoxList1")).Items){
if (item.Selected){
Skills += item.Value + ",";
}
}
Skills = Skills.TrimEnd(',');
//Get RadioButtonList Selected text
String Experience = ((RadioButtonList)dataGridItem.FindControl("RadioButtonList1")).SelectedItem.Text;
//Get DropDownList Selected text
String Degree = ((DropDownList)dataGridItem.FindControl("DropDownList1")).SelectedItem.Text;
// Build String to show result.
Result += Name;
Result += " [Age -" + Age + "] ";
if (IsGraduate){
Result += "Is Graduate , ";
}else{
Result += "Is not Graduate , ";
}
Result += "Has Skills[" + Skills + "] , ";
Result += "Has " + Experience + " Experience , And " ;
Result += "Has " + Degree + " Degree." ;
Result += "<br>";
}
ResultField.Text = Result;
}
class Person{
String _Name;
int _Age;
bool _IsGraduate;
public Person(String name,int age, bool isGraduate){
_Name = name;
_Age = age;
_IsGraduate = isGraduate;
}
public String Name{
get{return _Name;}
}
public int Age{
get{return _Age;}
}
public bool IsGraduate{
get{return _IsGraduate;}
}
}
</script>
<html>
<head>
</head>
<body>
<form runat="server">
<asp:DataGrid id="MyDataGrid" runat="server" AutoGenerateColumns="False">
<ItemStyle verticalalign="Top"></ItemStyle>
<Columns>
<asp:BoundColumn DataField="Name" HeaderText="Name"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="Age">
<ItemTemplate>
<asp:TextBox id="AgeField" Columns="5" Text='<%# DataBinder.Eval(Container.DataItem,"Age") %>'
runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Graduate">
<ItemTemplate>
<asp:CheckBox id="IsGraduateField" Checked='<%# (bool)DataBinder.Eval(Container.DataItem,"IsGraduate") %>'
runat="server"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Skills">
<ItemTemplate>
<asp:CheckBoxList id="CheckBoxList1" runat="server" >
<asp:ListItem Value="C#" Selected="true">C#</asp:ListItem>
<asp:ListItem Value="C++">C++</asp:ListItem>
<asp:ListItem Value="VB">VB</asp:ListItem>
<asp:ListItem Value="SQL Server" Selected="true">SQL Server</asp:ListItem>
</asp:CheckBoxList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Experience">
<ItemTemplate>
<asp:RadioButtonList id="RadioButtonList1" runat="server" >
<asp:ListItem Value="1" Selected="true">Less then 1 Year</asp:ListItem>
<asp:ListItem Value="3">Less then 3 Year</asp:ListItem>
<asp:ListItem Value="5">Less then 5 Year</asp:ListItem>
<asp:ListItem Value="10">Less then 10 Year</asp:ListItem>
</asp:RadioButtonList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Degree">
<ItemTemplate>
<asp:DropDownList id="DropDownList1" runat="server" >
<asp:ListItem Value="HighSchool" >HighSchool</asp:ListItem>
<asp:ListItem Value="Graduate" Selected="true">Graduate</asp:ListItem>
<asp:ListItem Value="Masters">Masters</asp:ListItem>
<asp:ListItem Value="PHD">PHD</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
<br />
<asp:Button id="GetValues" onclick="GetValues_Click" runat="server" Text="GetValues"></asp:Button>
<br />
<asp:Label id="ResultField" runat="server"></asp:Label>
</form>
</body>
</HTML>
