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asp.net中使用DatagridView的增删改方法具体实现

  • 时间:2020-11-05 15:25 编辑: 来源: 阅读:
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摘要:asp.net中使用DatagridView的增删改方法具体实现
default.aspx 页面:
[u]复制代码[/u] 代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="GPS_Web.Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title></title> </head> <body>     <form id="form1" runat="server">     <div>         <!--GridView中必须写的几个事件:onrowediting、onrowupdating、onrowcancelingedit、onrowdeleting--->         <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"             onpageindexchanging="GridView1_PageIndexChanging" onrowcancelingedit="GridView1_RowCancelingEdit"             onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating"             onrowdeleting="GridView1_RowDeleting"             onselectedindexchanging="GridView1_SelectedIndexChanging">             <Columns>                 <asp:TemplateField HeaderText="编号" Visible="False">                     <ItemTemplate>                         <asp:Label ID="lblNum" runat="server" Text='<%# Eval("Num") %>'></asp:Label>                     </ItemTemplate>                 </asp:TemplateField>                 <asp:TemplateField HeaderText="姓名">                     <EditItemTemplate>                         <asp:TextBox ID="txtTableName" runat="server" Text='<%# Eval("TableName") %>'></asp:TextBox>                     </EditItemTemplate>                     <ItemTemplate>                         <asp:Label ID="Label2" runat="server" Text='<%# Eval("TableName") %>'></asp:Label>                     </ItemTemplate>                 </asp:TemplateField>                 <asp:TemplateField HeaderText="地址">                     <EditItemTemplate>                         <asp:TextBox ID="txtTextName" runat="server" Text='<%# Eval("TextName") %>'></asp:TextBox>                     </EditItemTemplate>                     <ItemTemplate>                         <asp:Label ID="Label3" runat="server" Text='<%# Eval("TextName") %>'></asp:Label>                     </ItemTemplate>                 </asp:TemplateField>                 <asp:CommandField HeaderText="状态" ShowSelectButton="True" />                 <asp:CommandField HeaderText="编辑" ShowEditButton="True" />                 <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />             </Columns>         </asp:GridView>         <br />                         <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="添加" />         <br />         <br />        </div>     </form> </body> </html>
default.aspx.cs页面代码:
[u]复制代码[/u] 代码如下:
using System; using System.Web.UI; using System.Web.UI.WebControls; using GPS_Web.ywpages.DAL; using System.Data; namespace GPS_Web {     /// <summary>     /// 参考的网址:http://blog.csdn.net/wanglei_samrtfish/article/details/8070480     /// </summary>     public partial class Default : System.Web.UI.Page     {         protected void Page_Load(object sender, EventArgs e)         {             if (!Page.IsPostBack)             {                 GridViewBind();             }         }         private void GridViewBind()         {             string sql = "select Num,TableName,TextName from dbo.GroupType_Demo";             try             {     //绑定数据源                 GridView1.DataSource = SqlHelper.ExecuteDataset(SqlHelper.GetConnSting(), CommandType.Text, sql).Tables[0];                 GridView1.DataBind();             }             catch (Exception ex){}         }         protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)         {             GridView1.PageIndex = e.NewPageIndex;             GridViewBind();         }         protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)         {             GridView1.EditIndex = -1;             GridViewBind();         }         protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)         {  //gridview编辑项索引等于单击行的索引             GridView1.EditIndex = e.NewEditIndex;             GridViewBind();         }         /// <summary>         /// 修改事件         /// </summary>         protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)         {  //取出编号             int Num = Convert.ToInt32(((Label)GridView1.Rows[e.RowIndex].FindControl("lblNum")).Text.ToString());             //获取修改的值的内容             string TableName = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtTableName")).Text;             string TextName = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtTextName")).Text;             //更新记录             string sql = string.Format("update dbo.GroupType_Demo set TableName='{0}',TextName='{1}' where Num={2}",TableName,TextName,Num);             try             {                 int i = SqlHelper.ExecuteNonQuery(SqlHelper.GetConnSting(), CommandType.Text, sql);                 if (i > 0)                 {                     ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('修改成功!')</script>");                 }                 else                 {                     ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('修改失败!')</script>");                 }             }             catch (Exception ex)             {                 ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('操作无效!')</script>");             }             GridView1.EditIndex = -1;             GridViewBind();         }         /// <summary>         /// 删除事件         /// </summary>         protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)         {             //取出编号             int Num = Convert.ToInt32(((Label)GridView1.Rows[e.RowIndex].FindControl("lblNum")).Text.ToString());             //更新记录             string sql = string.Format("delete dbo.GroupType_Demo where num={0}", Num);             try             {                 int i = SqlHelper.ExecuteNonQuery(SqlHelper.GetConnSting(), CommandType.Text, sql);                 if (i > 0)                 {                     ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('删除成功!')</script>");                 }                 else                 {                     ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('删除失败!')</script>");                 }             }             catch (Exception ex)             {                 ClientScript.RegisterStartupScript(ClientScript.GetType(), "myscript", "<script language='javascript'>alert('操作无效!')</script>");             }  www.1sucai.cn             GridView1.EditIndex = -1;             GridViewBind();         }         /// <summary>         /// 添加按钮         /// </summary>         protected void btnAdd_Click(object sender, EventArgs e)         {             Response.Redirect("~/Default_Add.aspx");         }         protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)         {             //行号             int i = e.NewSelectedIndex;             GridViewRow row = GridView1.Rows[e.NewSelectedIndex];             btnAdd.Text = "你选中了第" + (i+1) + "行。";         }            } }
执行后的页面效果: [img]http://files.jb51.net/file_images/article/201306/201365110200968.jpg[/img]
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