GridView的应用

目录：

GridView无代码分页排序 
GridView选中，编辑，取消，删除 
GridView正反双向排序 
GridView和下拉菜单DropDownList结合 
GridView和CheckBox结合 
鼠标移到GridView某一行时改变该行的背景色方法一 
鼠标移到GridView某一行时改变该行的背景色方法二 
GridView实现删除时弹出确认对话框 
GridView实现自动编号 
GridView实现自定义时间货币等字符串格式 
GridView实现用“...”代替超长字符串 
GridView一般换行与强制换行 
GridView显示隐藏某一列 
GridView弹出新页面/弹出新窗口 
GridView固定表头(不用javascript只用CSS，2行代码，很好用) 
GridView合并表头多重表头无错完美版（以合并3列3行举例） 
GridView突出显示某一单元格（例如金额低于多少，分数不及格等） 
GridView加入自动求和求平均值小计 
GridView数据导入Excel/Excel数据读入GridView 
1.GridView无代码分页排序： 
 
实现方法： 
 
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： 
 
实现方法： 
 
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： 
... ... 
<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： 
实现方法：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 表1"; 
sqlcon = new SqlConnection(strCon); 
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); 
DataSet myds = new DataSet(); 
sqlcon.Open(); 
myda.Fill(myds, "表2"); 
DataView view = myds.Tables["表2"].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>