GridView使用大全攻略.doc

1.GridView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。1：分页保存选中状态保存CheckBox的值GridView在分页过程中并不维护CheckBox的选择状态，幸运的是，我们可以使用Session来维护CheckBox的状态，这个功能使用RememberOldValues完成private void RememberOldValues() ArrayList categoryIDList = new ArrayList(); int index = -1; foreach (GridViewRow row in okZMGV.Rows) index =Convert .ToInt32( okZMGV.DataKeysrow.RowIndex.Value); bool result = (CheckBox)row.FindControl(IsCheckBox).Checked; / Check in the Session if (Sessionstate != null) categoryIDList = (ArrayList)Sessionstate; if (result) if (!categoryIDList.Contains(index) categoryIDList.Add(index); else categoryIDList.Remove(index); if (categoryIDList != null & categoryIDList.Count 0) Sessionstate = categoryIDList;还原CheckBox的状态 下一步，需要定义一个方法来还原Checkbox的状态值 private void RePopulateValues() ArrayList categoryIDList = (ArrayList)Sessionstate; if (categoryIDList != null & categoryIDList.Count 0) foreach (GridViewRow row in okZMGV .Rows) int index = (int)okZMGV.DataKeysrow.RowIndex.Value; if (categoryIDList.Contains(index) CheckBox myCheckBox = (CheckBox)row.FindControl(IsCheckBox); myCheckBox.Checked = true; 最后，在分页事件里调用上面两个方法protected void page_Click(object sender, ImageClickEventArgs e) RememberOldValues(); string count = (ImageButton)sender).CommandArgument.ToString().ToLower (); switch(count) case prev: if (okZMGV.PageIndex 0) okZMGV.PageIndex -= 1; break; case next: if (okZMGV.PageIndex okZMGV.PageCount - 1) okZMGV.PageIndex += 1; break; case 0: okZMGV.PageIndex=0;break;case last:okZMGV.PageIndex= okZMGV.pagecount-1;break; BrndOKBind(); RePopulateValues(); 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/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.DataKeyse.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.Rowse.RowIndex.Cells1.Controls0).Text.ToString().Trim() + ,字段2= + (TextBox)(GridView1.Rowse.RowIndex.Cells2.Controls0).Text.ToString().Trim() + ,字段3= + (TextBox)(GridView1.Rowse.RowIndex.Cells3.Controls0).Text.ToString().Trim() + where id= + GridView1.DataKeyse.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： . . 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/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) ViewStateSortOrder = 身份证号码; ViewStateOrderDire = ASC; bind(); protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) string sPage = e.SortExpression; if (ViewStateSortOrder.ToString() = sPage) if (ViewStateOrderDire.ToString() = Desc) ViewStateOrderDire = ASC; else ViewStateOrderDire = Desc; else ViewStateSortOrder = 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)ViewStateSortOrder + + (string)ViewStateOrderDire; view.Sort = sort; GridView1.DataSource = view; GridView1.DataBind(); sqlcon.Close(); 前台主要代码： 4.GridView和下拉菜单DropDownList结合：效果图：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 Default4 : System.Web.UI.Page SqlConnection sqlcon; string strCon = Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa; protected void Page_Load(object sender, EventArgs e) DropDownList ddl; if (!IsPostBack) 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); GridView1.DataSource = myds; GridView1.DataBind(); for (int i = 0; i = GridView1.Rows.Count - 1; i+) DataRowView mydrv = myds.Tables飞狐工作室.DefaultViewi; if (Convert.ToString(mydrv员工性别).Trim() = True) ddl = (DropDownList)GridView1.Rowsi.FindControl(DropDownList1); ddl.SelectedIndex = 0; if (Convert.ToString(mydrv员工性别).Trim() = False) ddl = (DropDownList)GridView1.Rowsi.FindControl(DropDownList1); ddl.SelectedIndex = 1; sqlcon.Close(); public SqlDataReader ddlbind() string sqlstr = select distinct 员工性别 from 飞狐工作室; sqlcon = new SqlConnection(strCon); SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); return sqlcom.ExecuteReader(); 前台主要代码： asp:DropDownList ID=DropDownList1 runat=server DataSource= DataValueField=员工性别 DataTextField=员工性别 5.GridView和CheckBox结合：效果图：后台代码：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 Default5 : System.Web.UI.Page/清清月儿/21aspnet SqlConnection sqlcon; string strCon = Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa; protected void Page_Load(object sender, EventArgs e) if (!IsPostBack) bind(); protected void CheckBox2_CheckedChanged(object sender, EventArgs e) for (int i = 0; i = GridView1.Rows.Count - 1; i+) CheckBox cbox = (CheckBox)GridView1.Rowsi.FindControl(CheckBox1); if (CheckBox2.Checked = true) cbox.Checked = true; else cbox.Checked = false; protected void Button2_Click(object sender, EventArgs e) sqlcon = new SqlConnection(strCon); SqlCommand sqlcom; for (int i = 0; i = GridView1.Rows.Count - 1; i+) CheckBox cbox = (CheckBox)GridView1.Rowsi.FindControl(CheckBox1); if (cbox.Checked = true) string sqlstr = delete from 飞狐工作室 where 身份证号码= + GridView1.DataKeysi.Value + ; sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); bind(); protected void Button1_Click(object sender, EventArgs e) CheckBox2.Checked = false; for (int i = 0; i = GridView1.Rows.Count - 1; i+) CheckBox cbox = (CheckBox)GridView1.Rowsi.FindControl(CheckBox1); cbox.Checked = false; public voi