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GridView 增删改

2012年04月20日 ⁄ 综合 ⁄ 共 6606字 ⁄ 字号 评论关闭
要点:1.不能是自动列,必须是手动列。;2.后台必须绑定主键,否则在进行操作时获取不到主键  GridView1.DataKeyNames = new string[] { "userid" };//主键
3.    展示列用,可以实现编辑<asp:BoundField DataField="username" HeaderText="用户姓名" />,编辑列 <asp:CommandField HeaderText="编辑" ShowEditButton="true" />;
4.后台查找控件值,使用方式(  string up = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim();表示在当前行的第1+1列,的第1(顺序是0)个控件,的值)。
5.编辑列事件必须实现  GridView1.EditIndex = e.NewEditIndex;   Bindgd()(数据绑定);;
6.他们的所有事件都是必须是以ing结尾的(如编辑事件 OnRowEditing="GridView1_RowEditing")。
7.获取主键id:  string s = GridView1.DataKeys[e.RowIndex].Value.ToString();表示获得当前行的主键值。
8.DataField:表示当前字段的值,可以是一个数组;DataFormatString,表示格式化当前指端显示在出来的格式,他用 XXXX{0}XXXX{1},的格式方式,其中{0},表示要寻找DataField中的第一个值,{1}表示寻找DataField中的第二个值。
快速预览:
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1.GridView无代码分页排序:

效果图:

1.AllowSorting设为True,aspx代码中是AllowSorting="True";
2.默认1页10条,如果要修改每页条数,修改PageSize即可,在aspx代码中是PageSize="12"。
3.默认的是单向排序的,右击GridView弹出“属性”,选择AllowSorting为True即可。

2.GridView选中,编辑,取消,删除:

效果图:

后台代码:
你可以使用sqlhelper,本文没用。代码如下:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{

//清清月儿http://blog.csdn.net/21aspnet  
  SqlConnection sqlcon;
  SqlCommand sqlcom;
  string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";
  protected void Page_Load(object sender, EventArgs e)
  {
  if (!IsPostBack)
  {
  bind();
  }
  }
  protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
  {
  GridView1.EditIndex = e.NewEditIndex;
  bind();
  }

//删除
  protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
  {
  string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
  sqlcon = new SqlConnection(strCon);
  sqlcom = new SqlCommand(sqlstr,sqlcon);
  sqlcon.Open();
  sqlcom.ExecuteNonQuery();
  sqlcon.Close();
  bind();
  }

//更新
  protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
  {
  sqlcon = new SqlConnection(strCon);
  string sqlstr = "update 表 set 字段1='"
  + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"
  + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"
  + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
  + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
  sqlcom=new SqlCommand(sqlstr,sqlcon);
  sqlcon.Open();
  sqlcom.ExecuteNonQuery();
  sqlcon.Close();
  GridView1.EditIndex = -1;
  bind();
  }

//取消
  protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
  {
  GridView1.EditIndex = -1;
  bind();
  }

//绑定
  public void bind()
  {
  string sqlstr = "select * from 表";
  sqlcon = new SqlConnection(strCon);
  SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
  DataSet myds = new DataSet();
  sqlcon.Open();
  myda.Fill(myds, "表");
  GridView1.DataSource = myds;
  GridView1.DataKeyNames = new string[] { "id" };//主键
  GridView1.DataBind();
  sqlcon.Close();
  }
}

前台主要代码:
  ... ...
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
  ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
  OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
  <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
  <Columns>
  <asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" />
  <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
  <asp:BoundField DataField="员工性别" HeaderText="性别" />
  <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
  <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
  <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
  <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
  </Columns>
  <RowStyle ForeColor="#000066" />
  <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
  <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
  <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
  </asp:GridView>

3.GridView正反双向排序:
效果图:点姓名各2次的排序,点其他也一样可以。

后台代码:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default3 : System.Web.UI.Page
{

//清清月儿的博客http://blog.csdn.net/21aspnet  
  SqlConnection sqlcon;
  string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=";
  protected void Page_Load(object sender, EventArgs e)
  {
  if (!IsPostBack)
  {
  ViewState["SortOrder"] = "身份证号码";
  ViewState["OrderDire"] = "ASC";
  bind();
  }
  }
  protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
  {
  string sPage = e.SortExpression;
  if (ViewState["SortOrder"].ToString() == sPage)
  {
  if (ViewState["OrderDire"].ToString() == "Desc")
  ViewState["OrderDire"] = "ASC";
  else
  ViewState["OrderDire"] = "Desc";
  }
  else
  {
  ViewState["SortOrder"] = e.SortExpression;
  }
  bind();
  }

  public void bind()
  {
   
  string sqlstr = "select top 5 * from 飞狐工作室";
  sqlcon = new SqlConnection(strCon);
  SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
  DataSet myds = new DataSet();
  sqlcon.Open();
  myda.Fill(myds, "飞狐工作室");
  DataView view = myds.Tables["飞狐工作室"].DefaultView;
  string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];
  view.Sort = sort;
  GridView1.DataSource = view;
  GridView1.DataBind();
  sqlcon.Close();
  }
}

前台主要代码:
<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"
  CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
  <FooterStyle BackColor="White" ForeColor="#000066" />
  <Columns>
  <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
  <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
  <asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别"/>
  <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
   
  </Columns>
  <RowStyle ForeColor="#000066" />
  <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
  <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
  <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
  </asp:GridView>

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