GridView行编辑、更新、取消、删除事件使用方法

注意：当启用编辑button时，点击编辑button后会使一整行都切换成文本框。为了是一行中的一部分是文本框，须要把以整行的全部列都转换成模板，然后删掉编辑模板中的代码。这样就能使你想编辑的列转换成文本框。

1.界面

<asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333"


            GridLines="None" AutoGenerateColumns="False"  DataKeyNames="ProductID"

            onrowdatabound="GridView1_RowDataBound" AllowPaging="True"

            onpageindexchanging="GridView1_PageIndexChanging"

            onrowcommand="GridView1_RowCommand"

            onrowcancelingedit="GridView1_RowCancelingEdit"

            onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating"


            onrowdeleting="GridView1_RowDeleting">

            <PagerSettings FirstPageText="首页" LastPageText="尾页"

                Mode="NextPreviousFirstLast" NextPageText="下一页" PreviousPageText="上一页" />

            <RowStyle BackColor="#E3EAEB" />

            <Columns>

                <asp:TemplateField HeaderText="ProductID">

 

                    <ItemTemplate>

                        <asp:Label ID="Label2" runat="server" Text='<%# Bind("ProductID") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="ProductName">

                    <EditItemTemplate>

                        <asp:TextBox ID="txtName" runat="server" Text='<%# Bind("ProductName") %>'></asp:TextBox>

                    </EditItemTemplate>

                    <ItemTemplate>

                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("ProductName") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="UnitPrice">

                    <ItemTemplate>

                        <asp:Label ID="Label3" runat="server" Text='<%# Bind("UnitPrice") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="操">

<ItemTemplate>

                        <asp:LinkButton ID="del" runat="server" OnClientClick="return confirm('您确定要删除吗？')" CommandName="dell" >删除</asp:LinkButton>

                      

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:CommandField ShowEditButton="True" HeaderText="作">

               

                    <HeaderStyle  HorizontalAlign="Center" />

                        <ItemStyle  HorizontalAlign="Center"  Width="85px" ForeColor="Blue" />

                    </asp:CommandField>

            </Columns>

            <FooterStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White"

                HorizontalAlign="Right" />

            <PagerStyle BackColor="#666666" ForeColor="White" HorizontalAlign="Center" />

            <SelectedRowStyle BackColor="#C5BBAF" Font-Bold="True" ForeColor="#333333" />

            <HeaderStyle BackColor="#1C5E55" Font-Bold="True" ForeColor="White" />

            <EditRowStyle BackColor="#7C6F57" />

            <AlternatingRowStyle BackColor="White" />

        </asp:GridView>

2.前台操控调用业务

DalBll db = new DalBll();

    static List<Products> tmpList = new List<Products>();

    protected void Page_Load(object sender, EventArgs e)

    {

       

        if(!IsPostBack)

        {

            InitGridView();

        }

    }

private void InitGridView()

    {

        tmpList = db.GetDataList();

        this.GridView1.DataSource = tmpList;

        this.GridView1.DataBind();

    }

//绑定数据时触发

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            Products tmp = e.Row.DataItem as Products;

            LinkButton lbtn = e.Row.FindControl("del") as LinkButton;

            if (lbtn != null && tmp != null)

                lbtn.CommandArgument = tmp.ProductID.ToString();//绑定主键

        }

    }

//删除数据

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        if (e.CommandName == "dell")

        {

            int productID = Convert.ToInt32(e.CommandArgument);

            db.Del(productID);

        }

}

//分页

    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {

        this.GridView1.PageIndex = e.NewPageIndex;

        InitGridView();

    }

//切换到编辑模式

    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

    {

        this.GridView1.EditIndex = e.NewEditIndex;

        InitGridView();

    }

//取消

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        this.GridView1.EditIndex = -1;

        InitGridView();

    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        //获取当前页索引

        int i = this.GridView1.EditIndex;

        //获取文本框的值

        string productsName = ((TextBox)(this.GridView1.Rows[i].FindControl("txtName"))).Text.ToString();

        DataKey key = this.GridView1.DataKeys[e.RowIndex];

        int id = Convert.ToInt32(key[0].ToString());

        //首先找到该对象

        Products tmp = tmpList.Where(c => c.ProductID == id).First();

        tmp.ProductName = productsName;

        db.Update(tmp);

        InitGridView();

    }

3.各操作数据的代码

public class DalBll

    {

        NorthwindEntities db = new NorthwindEntities();

public List<Products> GetDataList()

        {

            return db.Products.ToList();

        }

public void Del(int productID)

        {

            Products tmp = db.Products.Where(c=>c.ProductID==productID).First();

            db.DeleteObject(tmp);

            db.SaveChanges();

        }

public void Update(Products tmp)

        {

            //为參数对象创建实体键

            EntityKey key;

            object originalProductObj;

            //因參数对象不属于上下文，因此为该參数对象创建上下文实体键

            key = db.CreateEntityKey("Products", tmp);

            db.TryGetObjectByKey(key, out originalProductObj);

            db.ApplyPropertyChanges(key.EntitySetName, tmp);

            db.SaveChanges();

           

        }