灵活掌握asp.net中gridview控件的多种使用方法(上) 灵活使用asp.net中gridview控件的方法有很多种,本文内容很富,希望大家都能有所收获。 1.GridView无代码分页排序: 效果图: 小提示: 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 { 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: ... ... 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 { 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: 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"].DefaultView[i]; if (Convert.ToString(mydrv["员工性别"]).Trim() == "True") { ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 0; } if (Convert.ToString(mydrv["员工性别"]).Trim() == "False") { ddl = (DropDownList)GridView1.Rows[i].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: 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 { 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.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 飞狐工作室 where 身份证号码='" + 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 飞狐工作室"; 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[] { "身份证号码" }; GridView1.DataBind(); sqlcon.Close(); } } 前台主要代码: 6.鼠标移到GridView某一行时改变该行的背景色方法一: 效果图: 做法: 双击GridView的OnRowDataBound事件; 在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { int i; //执行循环,保证每条数据都可以更新 for (i = 0; i < GridView1.Rows.Count; i++) { //首先判断是否是数据行 if (e.Row.RowType == DataControlRowType.DataRow) { //当鼠标停留时更改背景色 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'"); //当鼠标移开时还原背景色 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c"); } } } 前台代码: 实现鼠标划过改变GridView的行背景色 清清月儿http://blog.csdn.net/21aspnet
7.鼠标移到GridView某一行时改变该行的背景色方法二: 效果图: 做法:和上面的一样就是代码不同 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //int i; ////执行循环,保证每条数据都可以更新 //for (i = 0; i < GridView1.Rows.Count; i++) //{ // //首先判断是否是数据行 // if (e.Row.RowType == DataControlRowType.DataRow) // { // //当鼠标停留时更改背景色 // e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'"); // //当鼠标移开时还原背景色 // e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c"); // } //} //如果是绑定数据行 if (e.Row.RowType == DataControlRowType.DataRow) { //鼠标经过时,行背景色变 e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'"); //鼠标移出时,行背景色变 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'"); } } 8.GridView实现删除时弹出确认对话框: 效果图: 实现方法: 双击GridView的OnRowDataBound事件; 在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是绑定数据行 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('你确认要删除:/"" + e.Row.Cells[1].Text + "/"吗?')"); } } } 9.GridView实现自动编号: 效果图: 实现方法: 双击GridView的OnRowDataBound事件; 在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是绑定数据行 if (e.Row.RowType == DataControlRowType.DataRow) { ////鼠标经过时,行背景色变 //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'"); ////鼠标移出时,行背景色变 //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'"); ////当有编辑列时,避免出错,要加的RowState判断 //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) //{ // ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:/"" + e.Row.Cells[1].Text + "/"吗?')"); //} } if (e.Row.RowIndex != -1) { int id = e.Row.RowIndex + 1; e.Row.Cells[0].Text = id.ToString(); } } 注意这时最好把前台的第一列的表头该为“编号”,因为以前的第一列被“吃掉”了。 10.GridView实现自定义时间货币等字符串格式: 效果图: 图1-未格式化前 图2-格式化后 解决方法: 在asp.net 2.0中,如果要在绑定列中显示比如日期格式等,如果用下面的方法是显示不了的 主要是由于htmlencode属性默认设置为true,已防止XSS攻击,安全起见而用的,所以,可以有以下两种方法解决 第一种: 将htmlencode设置为false即可 另外的解决方法为,使用模版列 前台代码: 附录-常用格式化公式: {0:C} 货币; {0:D4}由0填充的4个字符宽的字段中显示整数; {0:000.0}四舍五入小数点保留第几位有效数字; {0:N2}小数点保留2位有效数字;{0:N2}% 小数点保留2位有效数字加百分号; {0:D}长日期;{0:d}短日期;{0:yy-MM-dd} 例如07-3-25;;{0:yyyy-MM-dd} 例如2007-3-25 为大家附3个精彩的专题: ASP.NET控件使用手册 ASP.NET数据绑定控件使用汇总 ASP.NET控件使用汇总 以上就是asp.net中gridview控件的多种使用方法的第一篇,内容很丰富,之后还有终结篇,希望大家不要错过。