[转]GridView中直接新增行、编辑和删除

本文转自：http://www.cnblogs.com/gdjlc/archive/2009/11/10/2086951.html

.aspx 

<div><asp:Button runat="server" ID="btnAdd" Text="新增" OnClick="btnAdd_Click" /></div>
 <asp:GridView ID="gv" runat="server" AllowPaging="True" AllowSorting="True" DataKeyNames="id"
     AutoGenerateColumns="False" OnRowCancelingEdit="gv_RowCancelingEdit" OnRowEditing="gv_RowEditing"
     OnRowUpdating="gv_RowUpdating" OnRowDeleting="gv_RowDeleting" OnRowDataBound="gv_RowDataBound">
     <Columns>
         <asp:TemplateField HeaderText="名称">
             <EditItemTemplate>
                 <asp:TextBox ID="txtName" runat="server" Text='<%# Bind("txtName") %>'></asp:TextBox>
                 <asp:RequiredFieldValidator runat="server" ID="rfvtxtName" ControlToValidate="txtName"
                     Display="Dynamic" ErrorMessage="*不能为空" ForeColor="Red"></asp:RequiredFieldValidator>
             </EditItemTemplate>
             <ItemTemplate>
                 <asp:Label ID="lblName" runat="server" Text='<%# Bind("txtName") %>'></asp:Label>
             </ItemTemplate>
             <ItemStyle HorizontalAlign="Center" />
         </asp:TemplateField>
         <asp:TemplateField HeaderText="状态">
             <EditItemTemplate>
                 <asp:DropDownList ID="ddlIsEnable" runat="server">
                     <asp:ListItem Value="True">启用</asp:ListItem>
                     <asp:ListItem Value="False">停用</asp:ListItem>
                 </asp:DropDownList>
                 <asp:HiddenField ID="hfIsEnable" runat="server" Value='<%# Eval("IsEnable")%>' />
             </EditItemTemplate>
             <ItemTemplate>
                 <asp:Label ID="lblIsEnable" runat="server" Text='<%# Eval("IsEnable").ToString() == "True" ? "启用" : "停用" %>'></asp:Label>
             </ItemTemplate>
             <ItemStyle HorizontalAlign="Center" />
         </asp:TemplateField>
         <asp:TemplateField HeaderText="排序号">
             <EditItemTemplate>
                 <asp:TextBox ID="txtOrder" runat="server" Text='<%# Bind("Order") %>'></asp:TextBox>
                 <asp:RegularExpressionValidator runat="server" ID="revOrder" ControlToValidate="txtOrder"
                     ValidationExpression="\d+" Display="Dynamic" ErrorMessage="*必须为整数"></asp:RegularExpressionValidator>
             </EditItemTemplate>
             <ItemTemplate>
                 <asp:Label ID="lblOrder" runat="server" Text='<%# Eval("Order") %>'></asp:Label>
             </ItemTemplate>
             <ItemStyle HorizontalAlign="Center" />
         </asp:TemplateField>
         <asp:CommandField ShowDeleteButton="true" ShowEditButton="true" EditText="编辑" DeleteText="删除"
             CancelText="取消" HeaderText="操作" />
     </Columns>
     <EmptyDataTemplate>
         没有您查询的数据
     </EmptyDataTemplate>
     <PagerSettings Visible="false" />
 </asp:GridView>  

.aspx.cs 

public partial class CategoryList : System.Web.UI.Page
{
    private static List<Category> cateList;
    private ICategory iCate = IOC.R<ICategory>();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGV(true);
        }
    }
    private void BindGV(bool refresh)
    {
        if (refresh || cateList == null)
        {
            cateList = iCate.List();
        }
        this.gv.DataSource = cateList;
        this.gv.DataBind();
    }
    protected void gv_RowEditing(object sender, GridViewEditEventArgs e)
    {
        gv.EditIndex = e.NewEditIndex;
        BindGV(false);
        HiddenField hfIsEnable = (HiddenField)gv.Rows[e.NewEditIndex].FindControl("hfIsEnable");
        DropDownList ddlIsEnable = (DropDownList)gv.Rows[e.NewEditIndex].FindControl("ddlIsEnable");
        ddlIsEnable.SelectedValue = hfIsEnable.Value;
    }
    protected void gv_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        gv.EditIndex = -;
        BindGV(false);
    }
    //更新
    protected void gv_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        long id = Convert.ToInt32(gv.DataKeys[e.RowIndex].Values[].ToString());
        string name = ((TextBox)gv.Rows[e.RowIndex].FindControl("txtName")).Text.Trim();
        bool isEnable = Convert.ToBoolean(((DropDownList)gv.Rows[e.RowIndex].FindControl
lIsEnable")).SelectedValue);
        string txtOrder = ((TextBox)gv.Rows[e.RowIndex].FindControl("txtOrder")).Text;
        int order = string.IsNullOrEmpty(txtOrder) ?  : Convert.ToInt32(txtOrder);  

        long newId = id;
        Category category = iCate.Get(id);
        if (category != null)//如果数据库已存在该条记录，则更新
        {
            iCate.Update(id, c =>
            {
                c.Name = name;
                c.IsEnable = isEnable;
                c.Order = order;
            });
        }
        else//新增
        {
            Category cNew = new Category
            {
                Name = name,
                IsEnable = isEnable,
                Order = order
            };
            iCate.Insert(cNew);
            newId = cNew.ID;
        }
        Category cate = cateList.Where(c => c.ID == id).ToList().SingleOrDefault();
        if (cate != null)
        {
            cate.ID = newId;
            cate.Name = name;
            cate.IsEnable = isEnable;
            cate.Order = order;
        }  

        gv.EditIndex = -;
        BindGV(false);
    }
    //删除
    protected void gv_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        long id = Convert.ToInt64(gv.DataKeys[e.RowIndex].Values[].ToString());
        Category cate = cateList.Where(c => c.ID == id).ToList().SingleOrDefault();
        if (cate != null)
        {
            cateList.Remove(cate);
        }
        iCate.Delete(id);
        this.BindGV(false);
    }
    //新增一行记录
    protected void btnAdd_Click(object sender, EventArgs e)
    {
        long maxId = cateList.Max(c => c.ID) + ;
        Category cate = new Category()
        {
            ID = maxId,
            Name = "",
            Order = ,
            IsEnable = true
        };
        cateList.Add(cate);
        this.gv.EditIndex = cateList.Count - ;
        this.BindGV(false);
    }
    protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            LinkButton btn = ((LinkButton)e.Row.Cells[].Controls[]);
            if (btn.Text == "删除")
            {
                btn.Attributes.Add("onclick", "javascript:return confirm('您确信要删除吗!?')");
            }
        }
    }
}