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    试图加入插入行到页脚在GridView的ASP.netGridView、行到页脚、net、ASP

    2023-09-07 00:04:05 作者：默背你的心碎

    我想给用户创造从页脚行的新纪录，我的事件处理程序似乎并不奏效的能力......也许我会在这个完全错误的。

    插入按钮，我在GridView启用了也不行......检出网站的 http://aisched.engr.oregonstate.edu/admin/courses.aspx

    下面是我的code。在前面和后面：

     公共部分类admin_courses：System.Web.UI.Page
{
公共表的表;
ListDictionary listValues​​ =新ListDictionary（）;
文本框textBox1的=新文本框（）; //名称
文本框TextBox2中=新文本框（）; // CR
文本框textBox3 =新文本框（）; // CourseNum
文本框textBox4 =新文本框（）; //部



保护无效Page_Init（）
{

}

保护无效GridView1_RowDataBound（对象发件人，GridViewRowEventArgs E）
{
    如果（e.Row.RowType = DataControlRowType.Footer！）回报; //逃生，如果没有页脚

    textBox1.ID =名;
    textBox1.Width = 250;
    textBox2.ID =credit_hours;
    textBox2.Width = 25;
    textBox3.ID =部门;
    textBox3.Width = 30;
    textBox4.ID =类;
    textBox4.Width = 25;

    LinkBut​​ton的增加=新的LinkBut​​ton（）;
    add.ID =添加;
    add.Text =添加课程;
    add.CommandName =添加;
    add.Click + =新的EventHandler（add_Click）;

    e.Row.Cells [1] .Controls.Add（textBox1的）;
    e.Row.Cells [2] .Controls.Add（TextBox2中）;
    e.Row.Cells [3] .Controls.Add（textBox3）;
    e.Row.Cells [4] .Controls.Add（textBox4）;
    e.Row.Cells [5] .Controls.Add（添加）;

}


公共无效add_Click（对象发件人，EventArgs的）
{
    回复于（你点击添加课程！）;

        如果（textBox1.Text = NULL和放大器;！＆安培; textBox2.Text = NULL和放大器;！＆安培; textBox3.Text = NULL和放大器;！＆安培;！textBox4.Text = NULL）{
            listValues​​.Add（名，textBox1.Text）;
            listValues​​.Add（credit_hours，textBox2.Text）;
            listValues​​.Add（部门，textBox4.Text）; //对于Visual
            listValues​​.Add（类，textBox3.Text）;
        }
        LinqDataSource1.Insert（listValues​​）;
        的Response.Redirect（〜/管理/ courses.aspx）;
}

    } 

     ＆LT;％@页面语言=C＃的MasterPageFile =〜/ admin.masterAutoEventWireup =真正的codeFILE =courses.aspx.cs继承= admin_courses标题=OSU Aisched |管理员 - 课程％＆GT;

＆LT;％@注册议会=AjaxControlToolkit中命名空间=AjaxControlToolkit中标签preFIX =ASP％＆GT;

＆LT; ASP：内容ID =内容1ContentPlaceHolderID =admin_nav_links=服务器＆GT;
＆LT; UL ID =主＆GT;
    ＆LT;李＆GT;＆LT; A HREF =overview.aspx＆GT;概述＆LT; / A＆GT;＆LT; /李＆GT;
    ＆LT;李＆GT;＆LT; A HREF =users.aspx＆GT;用户＆LT; / A＆GT;＆LT; /李＆GT;
    ＆LT;李类=current_page_item＆GT;＆LT; A HREF =courses.aspx＆GT;课程＆LT; / A＆GT;＆LT; /李＆GT;
    ＆LT;李＆GT;＆LT; A HREF =programs.aspx＆gt;程序＆LT; / A＆GT;＆LT; /李＆GT;
    ＆LT;李＆GT;＆LT; A HREF =sections.aspx＆GT;第＆LT; / A＆GT;＆LT; /李＆GT;
    ＆LT;李＆GT;＆LT; A HREF =import.aspx＆GT;进出口LT; / A＆GT;＆LT; /李＆GT;
    ＆LT;李＆GT;＆LT; A HREF =logs.aspx＆GT;日志＆LT; / A＆GT;＆LT; /李＆GT;
＆LT; / UL＆GT;
＆LT; / ASP：内容＆GT;
＆LT; ASP：内容ID =内容2ContentPlaceHolderID =ContentPlaceHolder1=服务器＆GT;
＆LT;表格ID =Form1的=服务器＆GT;
＆LT; ASP：ScriptManager的ID =ScriptManager1=服务器＆GT;
＆LT; / ASP：ScriptManager的＆GT;
＆LT; ASP：使用LinqDataSource ID =LinqDataSource1=服务器
ContextTypeName =DataClassesDataContextEnableDelete =真
EnableInsert =真EnableUpdate =真正的表名=课程＆GT;
＆LT; / ASP：使用LinqDataSource＆GT;
＆其中; H1＆GT;＆其中a取代;课程与所述; / a取代;＆所述; / H1＆GT;
＆LT; ASP：的UpdateProgress ID =UpdateProgress1=服务器＆GT;
＆LT; / ASP：的UpdateProgress＆GT;
＆LT; ASP：GridView控件ID =GridView1=服务器的AutoGenerateColumns =FALSE
    DataKeyNames =COURSE_ID的DataSourceID =LinqDataSource1
    背景色=＃DEBA84边框颜色=＃DEBA84边框=无边框宽度=1像素
    CELLPADDING =3CELLSPACING =2AllowSorting =真ShowFooter =真
    OnRowDataBound =GridView1_RowDataBound＆GT;
＆LT; RowStyle背景色=＃FFF7E7前景色=＃8C4510/＆GT;
＆LT;列＆GT;
    ＆LT; ASP：绑定列的DataField =COURSE_IDHEADERTEXT =ID
        只读=真SORTEX pression =COURSE_ID/＆GT;
    ＆LT; ASP：绑定列的DataField =名称HEADERTEXT =名称SORTEX pression =名/＆GT;
    ＆LT; ASP：绑定列的DataField =credit_hoursHEADERTEXT =CR
        SORTEX pression =credit_hours/＆GT;
    ＆LT; ASP：绑定列的DataField =部门HEADERTEXT =部SORTEX pression =部门/＆GT;
    ＆LT; ASP：绑定列的DataField =类HEADERTEXT =＃SORTEX pression =下课/＆GT;
    ＆LT; ASP：CommandField中DeleteImageUrl =〜/媒体/ delete.png的ShowDeleteButton =真
        ShowEditButton =真ShowInsertButton =真/＆GT;
＆LT; /列＆GT;
＆LT; FooterStyle背景色=＃F7DFB5前景色=＃8C4510/＆GT;
＆LT; PagerStyle前景色=＃8C4510Horizo​​ntalAlign =中心/＆GT;
＆LT; SelectedRowStyle背景色=＃738A9C字体，粗体为真前景色=白/＆GT;
＆LT; HeaderStyle背景色=＃A55129字体，粗体为真前景色=白/＆GT;
＆LT; / ASP：GridView控件＆GT;


＆LT; BR /＆GT;
＆LT; ASP：超链接ID =HyperLink1=服务器目标=〜/管理/ addCourse.aspx启用=真正的NavigateUrl =〜/管理/ addCourse.aspx文本=添加新课程＆GT ;＆LT; / ASP：超链接＆GT;
＆LT; BR /＆GT;

＆LT; /形式GT;

＆LT; / ASP：内容＆GT;
    在ASP.NET 2.0中操作数据之五十一 从GridView的页脚插入新记录

    解决方案

    我希望（或至少我当然希望）有一个更好的方式来做到这一点，但尝试这样的：

     ＆LT; ASP：使用LinqDataSource =服务器ID =LinqDataSource1ContextTypeName =Courses.DataClassesDataContext表名=课程EnableDelete =真EnableUpdate =真EnableInsert =真/＆GT;
＆LT; H1＆GT;
    ＆其中a取代;
        课程＆LT; / A＆GT;＆LT; / H1＆GT;
＆LT; ASP：的UpdateProgress ID =UpdateProgress1=服务器＆GT;
＆LT; / ASP：的UpdateProgress＆GT;
＆LT; ASP：GridView控件ID =GridView1=服务器的AutoGenerateColumns =FALSEDataKeyNames =COURSE_ID
    的DataSourceID =LinqDataSource1背景色=＃DEBA84边框颜色=＃DEBA84边框=无
    边框宽度=1像素的cellpadding =3CELLSPACING =2AllowSorting =真
    ShowFooter =真＆GT;
    ＆LT;列＆GT;
        ＆LT; ASP：绑定列的DataField =COURSE_IDHEADERTEXT =COURSE_ID只读=真SORTEX pression =COURSE_ID
            InsertVisible =FALSE/＆GT;
        ＆LT; ASP：模板列HEADERTEXT =名称SORTEX pression =名与GT;
            ＆LT; EditItemTemplate中＆GT;
                ＆LT; ASP：文本框ID =TextBox1的=服务器文本='＆LT;％＃绑定（名）％＆GT;'＆GT;＆LT; / ASP：文本框＆GT;
            ＆LT; / EditItemTemplate中＆GT;
            ＆LT;的ItemTemplate＆GT;
                ＆LT; ASP：标签ID =标签1=服务器文本='＆LT;％＃绑定（名）％＆GT;'＆GT;＆LT; / ASP：标签＆gt;
            ＆LT; / ItemTemplate中＆GT;
            ＆LT; FooterTemplate＆GT;
                ＆LT; ASP：文本框ID =NameTextBox=服务器/＆GT;
            ＆LT; / FooterTemplate＆GT;

        ＆LT; / ASP：的TemplateField＆GT;
        ＆LT; ASP：模板列HEADERTEXT =credit_hoursSORTEX pression =credit_hours＆GT;
            ＆LT; EditItemTemplate中＆GT;
                ＆LT; ASP：文本框ID =TextBox2中=服务器文本='＆LT;％＃绑定（credit_hours）％＆GT;'＆GT;＆LT; / ASP：文本框＆GT;
            ＆LT; / EditItemTemplate中＆GT;
            ＆LT;的ItemTemplate＆GT;
                ＆LT; ASP：标签ID =Label2的=服务器文本='＆LT;％＃绑定（credit_hours）％＆GT;'＆GT;＆LT; / ASP：标签＆gt;
            ＆LT; / ItemTemplate中＆GT;
            ＆LT; FooterTemplate＆GT;
                ＆LT; ASP：文本框ID =HoursTextBox=服务器/＆GT;
            ＆LT; / FooterTemplate＆GT;
        ＆LT; / ASP：的TemplateField＆GT;
        ＆LT; ASP：模板列HEADERTEXT =部门SORTEX pression =部门＆GT;
            ＆LT; EditItemTemplate中＆GT;
                ＆LT; ASP：文本框ID =TextBox3=服务器文本='＆LT;％＃绑定（部门）％＆GT;'＆GT;＆LT; / ASP：文本框＆GT;
            ＆LT; / EditItemTemplate中＆GT;
            ＆LT;的ItemTemplate＆GT;
                ＆LT; ASP：标签ID =LABEL3=服务器文本='＆LT;％＃绑定（部门）％＆GT;'＆GT;＆LT; / ASP：标签＆gt;
            ＆LT; / ItemTemplate中＆GT;
            ＆LT; FooterTemplate＆GT;
                ＆LT; ASP：文本框ID =DeptTextBox=服务器/＆GT;
            ＆LT; / FooterTemplate＆GT;
        ＆LT; / ASP：的TemplateField＆GT;
        ＆LT; ASP：模板列HEADERTEXT =下课SORTEX pression =类和GT;
            ＆LT; EditItemTemplate中＆GT;
                ＆LT; ASP：文本框ID =TextBox4=服务器文本='＆LT;％＃绑定（类）％＆GT;'＆GT;＆LT; / ASP：文本框＆GT;
            ＆LT; / EditItemTemplate中＆GT;
            ＆LT;的ItemTemplate＆GT;
                ＆LT; ASP：标签ID =Label4=服务器文本='＆LT;％＃绑定（类）％＆GT;'＆GT;＆LT; / ASP：标签＆gt;
            ＆LT; / ItemTemplate中＆GT;
            ＆LT; FooterTemplate＆GT;
                ＆LT; ASP：文本框ID =ClassTextBox=服务器/＆GT;
            ＆LT; / FooterTemplate＆GT;
        ＆LT; / ASP：的TemplateField＆GT;
        ＆LT; ASP：的TemplateField ShowHeader =FALSE＆GT;
            ＆LT; EditItemTemplate中＆GT;
                ＆LT; ASP：LinkBut​​ton的ID =LinkBut​​ton1=服务器的CausesValidation =真的CommandName =更新
                    文本=更新＆GT;＆LT; / ASP：LinkBut​​ton的＆GT;
                ＆功放; NBSP;＆LT; ASP：LinkBut​​ton的ID =LinkBut​​ton2=服务器的CausesValidation =假的CommandName =取消
                    文本=取消＆GT;＆LT; / ASP：LinkBut​​ton的＆GT;
            ＆LT; / EditItemTemplate中＆GT;
            ＆LT;的ItemTemplate＆GT;
                ＆LT; ASP：LinkBut​​ton的ID =LinkBut​​ton1=服务器的CausesValidation =假的CommandName =编辑
                    文本=编辑＆GT;＆LT; / ASP：LinkBut​​ton的＆GT;
                ＆功放; NBSP;＆LT; ASP：LinkBut​​ton的ID =LinkBut​​ton2=服务器的CausesValidation =假的CommandName =删除
                    文本=删除＆GT;＆LT; / ASP：LinkBut​​ton的＆GT;
            ＆LT; / ItemTemplate中＆GT;
            ＆LT; FooterTemplate＆GT;
                ＆LT; ASP：LinkBut​​ton的ID =AddLinkBut​​ton=服务器的CommandName =添加文本=添加的CausesValidation =真/＆GT;
            ＆LT; / FooterTemplate＆GT;
        ＆LT; / ASP：的TemplateField＆GT;
    ＆LT; /列＆GT;
＆LT; / ASP：GridView控件＆GT;

    保护无效的Page_Load（对象发件人，EventArgs的）
    {
        尝试
        {
            如果（的IsPostBack）
            {
                //我们在回发所以检查，看看是否AddLinkBut​​ton被点击
                字符串的eventTarget =的Request.Form [__ EVENTTARGET]的ToString（）。

                如果（eventTarget.EndsWith（addlinkbutton，StringComparison.InvariantCultureIgnoreCase））
                {
                    //我们正在增加新的一行所以从尾行建立与控件ListDictionary
                    ListDictionary值=新ListDictionary（）;

                    values​​.Add（名，（（文本框）GridView1.FooterRow.FindControl（NameTextBox））文本。）;
                    values​​.Add（credit_hours，（（文本框）GridView1.FooterRow.FindControl（HoursTextBox））文本。）;
                    values​​.Add（部门，（（文本框）GridView1.FooterRow.FindControl（DeptTextBox））文本。）;
                    values​​.Add（类，（（文本框）GridView1.FooterRow.FindControl（ClassTextBox））文本。）;

                    //通过ListDictionary到数据源为关闭发送到数据库
                    LinqDataSource1.Insert（值）;

                    //刷新网格，以便它显示了我们刚才添加的行
                    GridView1.DataBind（）;
                }
            }
        }
        赶上（例外）
        {

            扔;
        }
    }

    我不能让它无需编写code手工做的插入工作。通过检查事件目标隐藏字段，看它是否与addlinkbutton'结尾感觉非常错误的，但它的工作原理处理AddLinkBut​​ton_Click事件在Page_Load事件。

    I'm trying to give the user the ability to create a new record from the footer row and my event handler doesn't seem to be working... or maybe I'm going at this all wrong.

    The insert button that I enabled in the gridview doesn't work either...checkout the site at http://aisched.engr.oregonstate.edu/admin/courses.aspx

    Here is my code in front and behind:

    public partial class admin_courses : System.Web.UI.Page
{
public Table table;
ListDictionary listValues = new ListDictionary();
TextBox textBox1 = new TextBox(); //Name
TextBox textBox2 = new TextBox(); //CR
TextBox textBox3 = new TextBox(); //CourseNum
TextBox textBox4 = new TextBox(); //Dept



protected void Page_Init()
{

}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType != DataControlRowType.Footer) return; //Escape if not footer

    textBox1.ID = "name";
    textBox1.Width = 250;
    textBox2.ID = "credit_hours";
    textBox2.Width = 25;
    textBox3.ID = "dept";
    textBox3.Width = 30;
    textBox4.ID = "class";
    textBox4.Width = 25;

    LinkButton add = new LinkButton();
    add.ID = "add";
    add.Text = "Add course";
    add.CommandName = "add";
    add.Click += new EventHandler(add_Click);

    e.Row.Cells[1].Controls.Add(textBox1);
    e.Row.Cells[2].Controls.Add(textBox2);
    e.Row.Cells[3].Controls.Add(textBox3);
    e.Row.Cells[4].Controls.Add(textBox4);
    e.Row.Cells[5].Controls.Add(add);

}


public void add_Click(object sender, EventArgs e)
{
    Response.Write("you Clicked Add Course!");

        if (textBox1.Text != null && textBox2.Text != null && textBox3.Text != null && textBox4.Text != null) {
            listValues.Add("name", textBox1.Text);
            listValues.Add("credit_hours", textBox2.Text);
            listValues.Add("dept", textBox4.Text); //For Visual
            listValues.Add("class", textBox3.Text);
        }
        LinqDataSource1.Insert(listValues);
        Response.Redirect("~/admin/courses.aspx");
}

    }

    <%@ Page Language="C#" MasterPageFile="~/admin.master" AutoEventWireup="true" CodeFile="courses.aspx.cs" Inherits="admin_courses" Title="OSU Aisched | Admin - Courses" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>

<asp:Content ID="Content1" ContentPlaceHolderID="admin_nav_links" Runat="Server">
<ul id="main">
    <li><a href="overview.aspx">Overview</a></li>
    <li><a href="users.aspx">Users</a></li>
    <li class="current_page_item"><a href="courses.aspx">Courses</a></li>
    <li><a href="programs.aspx">Programs</a></li>
    <li><a href="sections.aspx">Sections</a></li>
    <li><a href="import.aspx">Import</a></li>
    <li><a href="logs.aspx">Logs</a></li>
</ul>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<form id="Form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:LinqDataSource ID="LinqDataSource1" runat="server" 
ContextTypeName="DataClassesDataContext" EnableDelete="True" 
EnableInsert="True" EnableUpdate="True" TableName="courses">
</asp:LinqDataSource>
<h1><a>Courses</a></h1>
<asp:UpdateProgress ID="UpdateProgress1" runat="server">
</asp:UpdateProgress>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
    DataKeyNames="course_id" DataSourceID="LinqDataSource1" 
    BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" 
    CellPadding="3" CellSpacing="2" AllowSorting="True" ShowFooter="True"
    OnRowDataBound="GridView1_RowDataBound" >
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<Columns>
    <asp:BoundField DataField="course_id" HeaderText="ID" 
        ReadOnly="True" SortExpression="course_id" />
    <asp:BoundField DataField="name" HeaderText="Name" SortExpression="name" />
    <asp:BoundField DataField="credit_hours" HeaderText="CR" 
        SortExpression="credit_hours" />
    <asp:BoundField DataField="dept" HeaderText="Dept" SortExpression="dept" />
    <asp:BoundField DataField="class" HeaderText="#" SortExpression="class" />
    <asp:CommandField DeleteImageUrl="~/media/delete.png" ShowDeleteButton="True" 
        ShowEditButton="True" ShowInsertButton="True"/>
</Columns>
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
</asp:GridView>


<br />
<asp:HyperLink ID="HyperLink1" runat="server" Target="~/admin/addCourse.aspx"  Enabled="true"NavigateUrl="~/admin/addCourse.aspx" Text="Add New course"></asp:HyperLink>
<br />

</form>

</asp:Content>

    解决方案

    I expect (or at least I certainly hope) there's a better way to do this, but try this:

    <asp:LinqDataSource runat="server" ID="LinqDataSource1" ContextTypeName="Courses.DataClassesDataContext" TableName="Courses" EnableDelete="True" EnableUpdate="True" EnableInsert="True" />
<h1>
    <a>
        Courses</a></h1>
<asp:UpdateProgress ID="UpdateProgress1" runat="server">
</asp:UpdateProgress>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="course_id"
    DataSourceID="LinqDataSource1" BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None"
    BorderWidth="1px" CellPadding="3" CellSpacing="2" AllowSorting="True" 
    ShowFooter="True">
    <Columns>
        <asp:BoundField DataField="course_id" HeaderText="course_id" ReadOnly="True" SortExpression="course_id"
            InsertVisible="False" />
        <asp:TemplateField HeaderText="name" SortExpression="name" >
            <EditItemTemplate>
                <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("name") %>'></asp:TextBox>
            </EditItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label1" runat="server" Text='<%# Bind("name") %>'></asp:Label>
            </ItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="NameTextBox" runat="server" />
            </FooterTemplate>

        </asp:TemplateField>
        <asp:TemplateField HeaderText="credit_hours" SortExpression="credit_hours">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("credit_hours") %>'></asp:TextBox>
            </EditItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label2" runat="server" Text='<%# Bind("credit_hours") %>'></asp:Label>
            </ItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="HoursTextBox" runat="server" />
            </FooterTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="dept" SortExpression="dept">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("dept") %>'></asp:TextBox>
            </EditItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label3" runat="server" Text='<%# Bind("dept") %>'></asp:Label>
            </ItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="DeptTextBox" runat="server" />
            </FooterTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="class" SortExpression="class">
            <EditItemTemplate>
                <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("class") %>'></asp:TextBox>
            </EditItemTemplate>
            <ItemTemplate>
                <asp:Label ID="Label4" runat="server" Text='<%# Bind("class") %>'></asp:Label>
            </ItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="ClassTextBox" runat="server" />
            </FooterTemplate>
        </asp:TemplateField>
        <asp:TemplateField ShowHeader="False">
            <EditItemTemplate>
                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="True" CommandName="Update"
                    Text="Update"></asp:LinkButton>
                &nbsp;<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="Cancel"
                    Text="Cancel"></asp:LinkButton>
            </EditItemTemplate>
            <ItemTemplate>
                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Edit"
                    Text="Edit"></asp:LinkButton>
                &nbsp;<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="Delete"
                    Text="Delete"></asp:LinkButton>
            </ItemTemplate>
            <FooterTemplate>
                <asp:LinkButton ID="AddLinkButton" runat="server" CommandName="Add" Text="Add" CausesValidation="true" />
            </FooterTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            if (IsPostBack)
            {
                // We are in a Postback so check to see if the AddLinkButton was clicked
                String eventTarget = Request.Form["__EVENTTARGET"].ToString();

                if (eventTarget.EndsWith("addlinkbutton",StringComparison.InvariantCultureIgnoreCase))
                {
                    // We are adding a new row so build a ListDictionary with the controls from the footer row
                    ListDictionary values = new ListDictionary();

                    values.Add("name", ((TextBox)GridView1.FooterRow.FindControl("NameTextBox")).Text);
                    values.Add("credit_hours", ((TextBox)GridView1.FooterRow.FindControl("HoursTextBox")).Text);
                    values.Add("dept", ((TextBox)GridView1.FooterRow.FindControl("DeptTextBox")).Text);
                    values.Add("class", ((TextBox)GridView1.FooterRow.FindControl("ClassTextBox")).Text);

                    // Pass the ListDictionary to the data source to send off to the database
                    LinqDataSource1.Insert(values);

                    // Refresh the grid so it shows the row we just added
                    GridView1.DataBind();
                }
            }
        }
        catch (Exception)
        {

            throw;
        }
    }

    I couldn't make it work without writing code manually to do the Insert. Handling the AddLinkButton_Click event in the Page_Load event by examining the EventTarget hidden field to see if it ends with 'addlinkbutton' feels quite wrong, but it works.

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