在ASP.NET中访问DataGrid中所有控件的值

要在ASP.NET中访问DataGrid中所有控件的值，可以遍历DataGrid中每个控件

实例1（来至孟子E章）：

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="DataGridAccessValues.aspx.vb"
Inherits="aspxWeb.DataGridAccessValues"%>


'
runat="server">

'
runat="server">

C#
C++
VB
SQL Server

1 Year
3 Year
5 Year
10 Year

HighSchool
Graduate
Masters
PHD

后端代码：
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 窗体设计器生成的代码 "

'该调用是 Web 窗体设计器所必需的。
Private Sub InitializeComponent()

End Sub

Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: 此方法调用是 Web 窗体设计器所必需的
'不要使用代码编辑器修改它。
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 + "[年龄：" + Age.ToString() + "]"
Result += " "
If IsGraduate Then
Result += "已经毕业 , "
Else
Result += "没有毕业 , "
End If
Result += "技能：" + Skills + " , "
Result += "经验： " + Experience + " , 和 "
Result += "学位： " + Degree + "。"
Result += "
"
Next
ResultField.Text = Result
End Sub
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
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开发", 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#例子代码：
<%@ Page Language="C#" %>
<%@ import Namespace="System.Collections" %>

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 += "
";
}
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;}
}
}

'
runat="server">

'
runat="server">

C#
C++
VB
SQL Server

Less then 1 Year
Less then 3 Year
Less then 5 Year
Less then 10 Year

HighSchool
Graduate
Masters
PHD

实例2（来至ASP.NET快速入门）：

DataView CartView;
Double runningTotal = 0;

//Cart 是 Page 上的一个属性
DataTable Cart {
get {
if (Session["DGC_ShoppingCart"] == null) {
DataTable tmpCart = new DataTable();
tmpCart.Columns.Add(new DataColumn("数量", typeof(string)));
tmpCart.Columns.Add(new DataColumn("产品", typeof(string)));
tmpCart.Columns.Add(new DataColumn("价格", typeof(Double)));
tmpCart.Columns.Add(new DataColumn("礼品包", typeof(bool)));
Session["DGC_ShoppingCart"] = tmpCart;

// 第一次加载 -- 预填充一些数据
for (int i=1; i<=6; i++) {
DataRow dr = tmpCart.NewRow();
dr[0] = "1";
dr[1] = "产品" + i.ToString();
dr[2] = 1.23 * (i+1);
dr[3] = false;
tmpCart.Rows.Add(dr);
}
return tmpCart;
}
else
return (DataTable)Session["DGC_ShoppingCart"];
}
}

void Page_Init(Object sender, EventArgs e) {
MyDataGrid.EnableViewState=true;
}

void Page_Load(Object sender, EventArgs e) {
CartView = Cart.DefaultView;
if (!IsPostBack)
BindGrid();
}

void BindGrid() {
MyDataGrid.DataSource = CartView;
MyDataGrid.DataBind();
}

void btnUpdate_click(Object sender, EventArgs e) {

for (int i=0; i// 对于数据库，我们应使用一条更新命令。
// 因为这是一个内存内数据表，所以我们只更改内存内的行。
DataRow dr = Cart.Rows;
dr[0] = qtyTextBox.Text;
dr[3] = giftCheckBox.Checked;
}
BindGrid();
}

Double CalcTotal (int count, Double price) {
Double total = count * price;
runningTotal += total;

return(total);
}

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