NET 72绝技.docx
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NET72绝技
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：
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：
usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingSystem.Data.SqlClient;
publicpartialclass_Default:
System.Web.UI.Page
{
//清清月儿
SqlConnectionsqlcon;
SqlCommandsqlcom;
stringstrCon='DataSource=local;Database=数据库名;Uid=帐号;Pwd=密码';
protectedvoidPage_Loadobjectsender,EventArgse
{
if!
IsPostBack
{
bind;
}
}
protectedvoidGridView1_RowEditingobjectsender,GridViewEditEventArgse
{
GridView1.EditIndex=e.NewEditIndex;
bind;
}
//删除
protectedvoidGridView1_RowDeletingobjectsender,GridViewDeleteEventArgse
{
stringsqlstr='deletefrom 表whereid=''+GridView1.DataKeys[e.RowIndex].Value.ToString+''';
sqlcon=newSqlConnectionstrCon;
sqlcom=newSqlCommandsqlstr,sqlcon;
sqlcon.Open;
sqlcom.ExecuteNonQuery;
sqlcon.Close;
bind;
}
//更新
protectedvoidGridView1_RowUpdatingobjectsender,GridViewUpdateEventArgse
{
sqlcon=newSqlConnectionstrCon;
stringsqlstr='update表set字段1=''
+TextBoxGridView1.Rows[e.RowIndex].Cells[1].Controls[0].Text.ToString.Trim+'',字段2=''
+TextBoxGridView1.Rows[e.RowIndex].Cells[2].Controls[0].Text.ToString.Trim+'',字段3=''
+TextBoxGridView1.Rows[e.RowIndex].Cells[3].Controls[0].Text.ToString.Trim+''whereid=''
+GridView1.DataKeys[e.RowIndex].Value.ToString+''';
sqlcom=newSqlCommandsqlstr,sqlcon;
sqlcon.Open;
sqlcom.ExecuteNonQuery;
sqlcon.Close;
GridView1.EditIndex=-1;
bind;
}
//取消
protectedvoidGridView1_RowCancelingEditobjectsender,GridViewCancelEditEventArgse
{
GridView1.EditIndex=-1;
bind;
}
//绑定
publicvoidbind
{
stringsqlstr='select*from表';
sqlcon=newSqlConnectionstrCon;
SqlDataAdaptermyda=newSqlDataAdaptersqlstr,sqlcon;
DataSetmyds=newDataSet;
sqlcon.Open;
myda.Fillmyds,'表';
GridView1.DataSource=myds;
GridView1.DataKeyNames=newstring[]{'id'};//主键
GridView1.DataBind;
sqlcon.Close;
}
}
前台主要代码：
......
GridViewID='GridView1'runat='server'AutoGenerateColumns='False'CellPadding='4'
ForeColor='#333333'GridLines='None'OnRowDeleting='GridView1_RowDeleting'OnRowEditing='GridView1_RowEditing'
OnRowUpdating='GridView1_RowUpdating'OnRowCancelingEdit='GridView1_RowCancelingEdit'>
BoundFieldDataField='身份证号码'HeaderText='用户ID'ReadOnly='True'/>
BoundFieldDataField='姓名'HeaderText='用户姓名'/>
BoundFieldDataField='员工性别'HeaderText='性别'/>
BoundFieldDataField='家庭住址'HeaderText='家庭住址'/>
CommandFieldHeaderText='选择'ShowSelectButton='True'/>
CommandFieldHeaderText='编辑'ShowEditButton='True'/>
CommandFieldHeaderText='删除'ShowDeleteButton='True'/>
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：
usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Collections;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingSystem.Data.SqlClient;
publicpartialclassDefault3:
System.Web.UI.Page
{
//清清月儿的博客
SqlConnectionsqlcon;
stringstrCon='DataSource=local;Database=北风贸易;Uid=sa;Pwd=';
protectedvoidPage_Loadobjectsender,EventArgse
{
if!
IsPostBack
{
ViewState['SortOrder']='身份证号码';
ViewState['OrderDire']='ASC';
bind;
}
}
protectedvoidGridView1_Sortingobjectsender,GridViewSortEventArgse
{
stringsPage=e.SortExpression;
ifViewState['SortOrder'].ToString==sPage
{
ifViewState['OrderDire'].ToString=='Desc'
ViewState['OrderDire']='ASC';
else
ViewState['OrderDire']='Desc';
}
else
{
ViewState['SortOrder']=e.SortExpression;
}
bind;
}
publicvoidbind
{
stringsqlstr='selecttop5*from飞狐工作室';
sqlcon=newSqlConnectionstrCon;
SqlDataAdaptermyda=newSqlDataAdaptersqlstr,sqlcon;
DataSetmyds=newDataSet;
sqlcon.Open;
myda.Fillmyds,'飞狐工作室';
DataViewview=myds.Tables['飞狐工作室'].DefaultView;
stringsort=stringViewState['SortOrder']+''+stringViewState['OrderDire'];
view.Sort=sort;
GridView1.DataSource=view;
GridView1.DataBind;
sqlcon.Close;
}
}
前台主要代码：
GridViewID='GridView1'runat='server'AllowSorting='True'AutoGenerateColumns='False'
CellPadding='3'Font-Size='9pt'OnSorting='GridView1_Sorting'BackColor='White'BorderColor='#CCCCCC'BorderStyle='None'BorderWidth='1px'>
BoundFieldDataField='身份证号码'HeaderText='用户ID'SortExpression='身份证号码'/>
BoundFieldDataField='姓名'HeaderText='用户姓名'SortExpression='姓名'/>
BoundFieldDataField='员工性别'HeaderText='性别'SortExpression='员工性别'/>
BoundFieldDataField='家庭住址'HeaderText='家庭住址'SortExpression='家庭住址'/>
GridView>
4.GridView和下拉菜单DropDownList结合：
效果图：
后台代码：
usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Collections;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingSystem.Data.SqlClient;
publicpartialclassDefault4:
System.Web.UI.Page
{
SqlConnectionsqlcon;
stringstrCon='DataSource=local;Database=北风贸易;Uid=sa;Pwd=sa';
protectedvoidPage_Loadobjectsender,EventArgse
{
DropDownListddl;
if!
IsPostBack
{
stringsqlstr='selecttop5*from飞狐工作室';
sqlcon=newSqlConnectionstrCon;
SqlDataAdaptermyda=newSqlDataAdaptersqlstr,sqlcon;
DataSetmyds=newDataSet;
sqlcon.Open;
myda.Fillmyds,'飞狐工作室';
GridView1.DataSource=myds;
GridView1.DataBind;
forinti=0;i<=GridView1.Rows.Count-1;i++
{
DataRowViewmydrv=myds.Tables['飞狐工作室'].DefaultView[i];
ifConvert.ToStringmydrv['员工性别'].Trim=='True'
{
ddl=DropDownListGridView1.Rows[i].FindControl'DropDownList1';
ddl.SelectedIndex=0;
}
ifConvert.ToStringmydrv['员工性别'].Trim=='False'
{
ddl=DropDownListGridView1.Rows[i].FindControl'DropDownList1';
ddl.SelectedIndex=1;
}
}
sqlcon.Close;
}
}
publicSqlDataReaderddlbind
{
stringsqlstr='selectdistinct员工性别from飞狐工作室';
sqlcon=newSqlConnectionstrCon;
SqlCommandsqlcom=newSqlCommandsqlstr,sqlcon;
sqlcon.Open;
returnsqlcom.ExecuteReader;
}
前台主要代码：
GridViewID='GridView1'runat='server'AllowSorting='True'AutoGenerateColumns='False'
CellPadding='3'Font-Size='9pt' Bac
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