aspnet gridview.docx
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aspnetgridview
目录
[ASP.NET]GridView点击行触发SelectedIndexChanged事件1
gridview 72般绝技3
1.GridView无代码分页排序:
3
2.GridView选中,编辑,取消,删除:
4
3.GridView正反双向排序:
10
4.GridView和下拉菜单DropDownList结合:
15
datagridview.Rows[i].DefaultCellStyle.BackColor背景色
datagridview.Rows[i].DefaultCellStyle.ForeColor前景色
[ASP.NET]GridView点击行触发SelectedIndexChanged事件
1、在<%@Page ...... %>指令中添加EnableEventValidation="false"
2、在RowDataBound事件中添加
protectedvoidGridView1_RowDataBound(objectsender,GridViewRowEventArgse)
{
switch(e.Row.RowType)
{
caseDataControlRowType.DataRow:
e.Row.Attributes["style"]="cursor:
hand";
#region //点击行触发SelectedIndexChanged事件
PostBackOptionsmyPostBackOptions=newPostBackOptions(this);
myPostBackOptions.AutoPostBack=false;
myPostBackOptions.PerformValidation=false;
myPostBackOptions.RequiresJavaScriptProtocol=true;//加入javascript:
头
Stringevt=Page.ClientScript.GetPostBackClientHyperlink(senderasGridView,"Select$"+e.Row.RowIndex.ToString());
e.Row.Attributes.Add("onclick",evt);
#endregion
break;
}
}
3、在第一二步之后就可以在SelectedIndexChanging和SelectedIndexChanged事件中添加处理逻辑了。
gridview 72般绝技
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_Load(objectsender,EventArgse)
{
if(!
IsPostBack)
{
bind();
}
}
protectedvoid GridView1_RowEditing(objectsender,GridViewEditEventArgse)
{
GridView1.EditIndex=e.NewEditIndex;
bind();
}
//删除
protectedvoid GridView1_RowDeleting(objectsender,GridViewDeleteEventArgse)
{
stringsqlstr="deletefrom表whereid='"+ GridView1.DataKeys[e.RowIndex].Value.ToString()+"'";
sqlcon=newSqlConnection(strCon);
sqlcom=newSqlCommand(sqlstr,sqlcon);
sqlcon.Open();
sqlcom.ExecuteNonQuery();
sqlcon.Close();
bind();
}
//更新
protectedvoid GridView1_RowUpdating(objectsender,GridViewUpdateEventArgse)
{
sqlcon=newSqlConnection(strCon);
stringsqlstr="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()+"'whereid='"
+ GridView1.DataKeys[e.RowIndex].Value.ToString()+"'";
sqlcom=newSqlCommand(sqlstr,sqlcon);
sqlcon.Open();
sqlcom.ExecuteNonQuery();
sqlcon.Close();
GridView1.EditIndex=-1;
bind();
}
//取消
protectedvoid GridView1_RowCancelingEdit(objectsender,GridViewCancelEditEventArgse)
{
GridView1.EditIndex=-1;
bind();
}
//绑定
publicvoidbind()
{
stringsqlstr="select*from表";
sqlcon=newSqlConnection(strCon);
SqlDataAdaptermyda=newSqlDataAdapter(sqlstr,sqlcon);
DataSetmyds=newDataSet();
sqlcon.Open();
myda.Fill(myds,"表");
GridView1.DataSource=myds;
GridView1.DataKeyNames=newstring[]{"id"};//主键
GridView1.DataBind();
sqlcon.Close();
}
}
前台主要代码:
......
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">
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_Load(objectsender,EventArgse)
{
if(!
IsPostBack)
{
ViewState["SortOrder"]="身份证号码";
ViewState["OrderDire"]="ASC";
bind();
}
}
protectedvoid GridView1_Sorting(objectsender,GridViewSortEventArgse)
{
stringsPage=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();
}
publicvoidbind()
{
stringsqlstr="selecttop5*from飞狐工作室";
sqlcon=newSqlConnection(strCon);
SqlDataAdaptermyda=newSqlDataAdapter(sqlstr,sqlcon);
DataSetmyds=newDataSet();
sqlcon.Open();
myda.Fill(myds,"飞狐工作室");
DataViewview=myds.Tables["飞狐工作室"].DefaultView;
stringsort=(string)ViewState["SortOrder"]+""+(string)ViewState["OrderDire"];
view.Sort=sort;
GridView1.DataSource=view;
GridView1.DataBind();
sqlcon.Close();
}
}
前台主要代码:
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">
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_Load(objectsender,EventArgse)
{
DropDownListddl;
if(!
IsPostBack)
{
stringsqlstr="selecttop5*from飞狐工作室";
sqlcon=newSqlConnection(strCon);
SqlDataAdaptermyda=newSqlDataAdapter(sqlstr,sqlcon);
DataSetmyds=newDataSet();
sqlcon.Open();
myda.Fill(myds,"飞狐工作室");
GridView1.DataSource=myds;
GridView1.DataBind();
for(inti=0;i<= GridView1.Rows.Count-1;i++)
{
DataRowViewmydrv=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();
}
}
publicSqlDataReaderddlbind()
{
stringsqlstr="selectdistinct员工性别from飞狐工作室";
sqlcon=newSqlConnection(strCon);
SqlCommandsqlcom=newSqlCommand(sqlstr,sqlcon);
sqlcon.Open();
returnsqlcom.ExecuteReader();
}