GridView的各種用法 2008-06-05 18:27:20分類： 系統運維快速預覽：GridView無代碼分頁排序GridView選中，編輯，取消，刪除GridView正反雙向排序GridView和下拉菜單DropDownList結合GridView和CheckBox結合鼠標移到GridView某一行時改變該行的背景色方法一鼠標移到GridView某一行時改變該行的背景色方法二GridView實現刪除時彈出確認對話框GridView實現自動編號GridView實現自定義時間貨幣等字符串格式GridView實現用“...”代替超長字符串GridView一般換行與強制換行GridView顯示隱藏某一列GridView彈出新頁面/彈出新窗口GridView固定表頭(不用javascript只用CSS，2行代碼，很好用)GridView合併表頭多重表頭無錯完美版（以合併3列3行舉例）GridView突出顯示某一單元格（例如金額低於多少，分數不及格等）GridView加入自動求和求平均值小計GridView數據導入Excel/Excel數據讀入GridView1.GridView無代碼分頁排序：效果圖：1.AllowSorting設爲True，aspx代碼中是AllowSorting="True"；2.默認1頁10條，如果要修改每頁條數，修改PageSize即可，在aspx代碼中是PageSize="12"。3.默認的是單向排序的，右擊GridView彈出“屬性”，選擇AllowSorting爲True即可。2.GridView選中，編輯，取消，刪除：效果圖：後臺代碼：你可以使用sqlhelper,本文沒用。代碼如下：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 {//清清月兒http://blog.csdn.net/21aspnet SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=數據庫名;Uid=帳號;Pwd=密碼"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); }//刪除 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(); }//綁定 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" };//主鍵 GridView1.DataBind(); sqlcon.Close(); }}前臺主要代碼： ... ...
<?xml:namespace prefix="asp">?xml:namespace>3.GridView正反雙向排序：效果圖：點姓名各2次的排序，點其他也一樣可以。後臺代碼：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{//清清月兒的博客http://blog.csdn.net/21aspnet SqlConnection sqlcon; string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd="; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ViewState["SortOrder"] = "身份證號碼"; 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 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飛狐工作室"); DataView view = myds.Tables["飛狐工作室"].DefaultView; string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"]; view.Sort = sort; GridView1.DataSource = view; GridView1.DataBind(); sqlcon.Close(); }}前臺主要代碼：
4.GridView和下拉菜單DropDownList結合：效果圖：後臺代碼：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=北風貿易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { DropDownList ddl; if (!IsPostBack) { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飛狐工作室"); GridView1.DataSource = myds; GridView1.DataBind(); for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv = myds.Tables["飛狐工作室"].DefaultView[i]; if (Convert.ToString(mydrv["員工性別"]).Trim() == "True") { ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 0; } if (Convert.ToString(mydrv["員工性別"]).Trim() == "False") { ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 1; } } sqlcon.Close(); } } public SqlDataReader ddlbind() { string sqlstr = "select distinct 員工性別 from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); return sqlcom.ExecuteReader(); }前臺主要代碼：
5.GridView和CheckBox結合：效果圖：後臺代碼：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{//清清月兒http://blog.csdn.net/21aspnet SqlConnection sqlcon; string strCon = "Data Source=(local);Database=北風貿易;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.Rows[i].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.Rows[i].FindControl("CheckBox1"); if (cbox.Checked == true) { string sqlstr = "delete from 飛狐工作室 where 身份證號碼='" + GridView1.DataKeys[i].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.Rows[i].FindControl("CheckBox1"); cbox.Checked = false; } } public void bind() { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "tb_Member"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份證號碼" }; GridView1.DataBind(); sqlcon.Close(); }}前臺主要代碼：
6.鼠標移到GridView某一行時改變該行的背景色方法一：效果圖：做法：雙擊GridView的OnRowDataBound事件；在後臺的GridView1_RowDataBound()方法添加代碼，最後代碼如下所示：protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { int i; //執行循環，保證每條數據都可以更新 for (i = 0; i < GridView1.Rows.Count; i++) { //首先判斷是否是數據行 if (e.Row.RowType == DataControlRowType.DataRow) { //當鼠標停留時更改背景色 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'"); //當鼠標移開時還原背景色 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c"); } } }前臺代碼：
7.鼠標移到GridView某一行時改變該行的背景色方法二：效果圖：做法：和上面的一樣就是代碼不同protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //int i; ////執行循環，保證每條數據都可以更新 //for (i = 0; i < GridView1.Rows.Count; i++) //{ // //首先判斷是否是數據行 // if (e.Row.RowType == DataControlRowType.DataRow) // { // //當鼠標停留時更改背景色 // e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'"); // //當鼠標移開時還原背景色 // e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c"); // } //} //如果是綁定數據行 if (e.Row.RowType == DataControlRowType.DataRow) { //鼠標經過時，行背景色變 e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'"); //鼠標移出時，行背景色變 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'"); } }8.GridView實現刪除時彈出確認對話框：效果圖：實現方法：雙擊GridView的OnRowDataBound事件；在後臺的GridView1_RowDataBound()方法添加代碼，最後代碼如下所示： protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是綁定數據行 if (e.Row.RowType == DataControlRowType.DataRow) { if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) { ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你確認要刪除：\"" + e.Row.Cells[1].Text + "\"嗎?')"); } } }9.GridView實現自動編號：效果圖：實現方法：雙擊GridView的OnRowDataBound事件；在後臺的GridView1_RowDataBound()方法添加代碼，最後代碼如下所示： protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是綁定數據行 //清清月兒http://blog.csdn.net/21aspnet if (e.Row.RowType == DataControlRowType.DataRow) { ////鼠標經過時，行背景色變 //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'"); ////鼠標移出時，行背景色變 //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'"); ////當有編輯列時，避免出錯，要加的RowState判斷 //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) //{ // ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你確認要刪除：\"" + e.Row.Cells[1].Text + "\"嗎?')"); //} } if (e.Row.RowIndex != -1) { int id = e.Row.RowIndex + 1; e.Row.Cells[0].Text = id.ToString(); } }注意這時最好把前臺的第一列的表頭該爲“編號”，因爲以前的第一列被“吃掉”了。
10.GridView實現自定義時間貨幣等字符串格式：效果圖：圖1-未格式化前圖2-格式化後解決方法：在asp.net 2.0中，如果要在綁定列中顯示比如日期格式等，如果用下面的方法是顯示不了的
主要是由於htmlencode屬性默認設置爲true,已防止XSS***，安全起見而用的，所以，可以有以下兩種方法解決1、
將htmlencode設置爲false即可另外的解決方法爲，使用模版列
<asp :Label ID="Label1" runat="server" Text=’
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