在ASP.NET中访问DataGrid中所有控件的值

作者：xiaoxiao
发表时间：2020-12-23 11:03
来源：未知

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"%> <!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> <asp:Button id="GetValues" οnclick="GetValues_Click" runat="server" Text="GetValues"></asp:Button> <asp:Label id="ResultField" runat="server"></asp:Label> </form> </body> </HTML> 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。 <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" %> &lt;script runat="server"&gt; 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;} } } &lt;/script&gt; <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> <asp:Button id="GetValues" οnclick="GetValues_Click" runat="server" Text="GetValues"></asp:Button> <asp:Label id="ResultField" runat="server"></asp:Label> </form> </body> </HTML> 实例2（来至ASP.NET快速入门）： <html> <script language="C#" runat="server"> 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<MYDATAGRID.ITEMS.COUNT; color="green" // 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[i]; dr[0] = qtyTextBox.Text; dr[3] = giftCheckBox.Checked; } BindGrid(); } Double CalcTotal (int count, Double price) { Double total = count * price; runningTotal += total; return(total); } </script> <body> <h3><font face="宋体">DataGrid 的自定义编辑</font></h3> <form runat=server> <?xml:namespace prefix = asp /><ASP:DataGrid id=MyDataGrid AutoGenerateColumns="false" HeaderStyle-BackColor="#aaaadd" Font-Size="8pt" Font-Name="宋体" CellPadding="4" GridLines="none" BorderWidth="1" BorderColor="black" runat="server"> <Columns> <asp:TemplateColumn HeaderText="数量"> <ItemTemplate> <asp:TextBox id=txtQty runat="server" B < Text='<%# DataBinder.Eval(Container, "DataItem.数量") %>'> Width="40px" /> </ItemTemplate> </asp:TemplateColumn> <asp:BoundColumn HeaderText="产品" DataField="产品"/> <asp:BoundColumn HeaderText="价格" DataField="价格" DataFormatString="{0:c}" /> <asp:TemplateColumn HeaderText="礼品包？"> <ItemTemplate> <center> <asp:CheckBox id=chkGift runat="server" B < Checked='<%# (bool)(((DataRowView)Container.DataItem)["礼品包"]) %>'> /> </center> </ItemTemplate> </asp:TemplateColumn> <asp:TemplateColumn HeaderText="小计"> <ItemTemplate> <p align="right"> <asp:Label runat="server" B < Text='<%# String.Format("{0:c}",CalcTotal((Int32.Parse((string)(((DataRowView)Container.DataItem)["数量"]))),((Double)(((DataRowView)Container.DataItem)["价格"])))) %>'> /> </p> </ItemTemplate> <FooterTemplate> <p align="right"><b> <asp:Label runat="server" B < Text='<%# String.Format("{0:c}", runningTotal) %>'> /> </b></p> </FooterTemplate> </asp:TemplateColumn> </Columns> </asp:DataGrid> <asp:LinkButton id=btnUpdate οnclick=btnUpdate_click Font-Size="9pt" Font-Name="Verdana" runat="server" Text="更新合计"></asp:LinkButton> </form> </body> </html>