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分享asp.net中怎么删除自动生成的label控件的值
public void NewLabel(string value, string columnname)
{
Label lab = new Label();
lab.ID = columnname + 1;
lab.Text = value;
lab.Visible = true;
this.myID.Controls.Add(lab);
LinkButton labclose = new LinkButton();
labclose.ID = columnname + 2;
labclose.Text = "×";
labclose.Style.Add("color", "red");
this.myID.Controls.Add(labclose);
labclose.Click += new EventHandler(labclose_click); //关闭
}
同时生成Label和LinkButton 两个控件，，怎么在点击LinkButton X这个控件的时候清空label控件 的值
{
Label lab = new Label();
lab.ID = columnname + 1;
lab.Text = value;
lab.Visible = true;
this.myID.Controls.Add(lab);
LinkButton labclose = new LinkButton();
labclose.ID = columnname + 2;
labclose.Text = "×";
labclose.Style.Add("color", "red");
this.myID.Controls.Add(labclose);
labclose.Click += new EventHandler(labclose_click); //关闭
}
同时生成Label和LinkButton 两个控件，，怎么在点击LinkButton X这个控件的时候清空label控件 的值
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岸 2013-03-09
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啊？ 就不搭理我了啊？
岸 2013-03-09
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这个控件都在后台生成的啊？那前台js怎么处理？
gxingmin 2013-03-09
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那是服务器端事件挥发了，跟这个事件代码没关系了，你把这个事件里代码全部注销，也一样全部清空
你在前台js里处理删除事件吧，别在后台处理
岸 2013-03-09
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还是一样只是全部隐藏掉了，并没有清空。
//关闭事件
private void labclose_click(object sender, System.EventArgs e)
{
LinkButton lblClose = sender as LinkButton;
foreach (Control c in myID.Controls)
{
if (c is Label && c.ID == lblClose.ID.Substring(0, lblClose.ID.Length - 1))
(c as Label).Text = "";
}
}
gxingmin 2013-03-09
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LinkButton lblClose = sender as LinkButton ;
foreach(Control c in myID.Controls)
{
if(c is Label && c.ID==lblClose.ID.SubString(0,lblClose.ID.Length-1))
c.Text="";
}
岸 2013-03-09
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[quote=引用 7 楼 chenyuling_28 的回复:]
引用 6 楼 gxingmin 的回复:
c.Text="";
改成
(c as Label).Text="";
我的第一个label控件显示的是多个字段的值，不是同一个字段，
public void GetDate()
{
string sqlGetType = "SELECT DISTINCT data1.VideoPath,data1.VideoPoint, pl.game_id, pl.playact_id,pl.number, sv.varvalue,pr.proj_name,mp.match_name,un.unit_name,pl.sporters_name,pl.end_time,pl.get_1,pl.get_2,pl.get_3,pl.s_total FROM web_video.web_video_game data1 LEFT JOIN taolu_detailquery.system_var sv ON data1.database_game_id=sv.game_id LEFT JOIN taolu_detailquery.playact pl ON sv.game_id=pl.game_id LEFT JOIN taolu_detailquery.project pr ON pl.project_id=pr.project_id AND pl.game_id=pr.game_id LEFT JOIN taolu_detailquery.palyact_list pal ON pl.playact_id=pal.playact_id AND pl.game_id=pal.game_id LEFT JOIN taolu_detailquery.sporter sp ON pal.sporter_id=sp.sporter_id AND pal.game_id=sp.game_id LEFT JOIN taolu_detailquery.match_project mp ON pr.match_id=mp.match_id LEFT JOIN taolu_detailquery.units un ON sp.unit_id=un.unit_id AND sp.game_id=un.game_id WHERE data1.database_game_id=sv.game_id AND pl.playact_id=pal.playact_id AND pal.sporter_id=sp.sporter_id AND sp.unit_id=un.unit_id AND pr.game_id=sv.game_id AND pl.number!=2 AND (sv.varvalue LIKE " + "'%" + getSreach + "%' OR pl.sporters_name LIKE " + "'%" + getSreach + "%' OR pr.proj_name LIKE " + "'%" + getSreach + "%' OR un.unit_name LIKE " + "'%" + getSreach + "%' OR sv.Game_Rule LIKE " + "'%" + getSreach + "%' OR sv.Game_Date LIKE " + "'%" + getSreach + "%') ";
if (type != "")
{
string stype = " AND sv.Game_Type='" + type + "'" ;
sqlGetType += stype;
NewLabel(type, "sv.Game_Type");
}
if (rule != "")
{
string srule = " AND sv.Game_Rule='" + rule + "'";
sqlGetType += srule;
NewLabel(rule, "sv.Game_Rule");
}
if (date != "")
{
string sdate = "AND YEAR(sv.Game_Date)='" + date + "'";
sqlGetType += sdate;
NewLabel(date, "YEAR(sv.Game_Date)");
}
if (varvalue != "")
{
string svarvalue = "AND sv.varvalue='" + varvalue + "'";
sqlGetType += svarvalue;
NewLabel(varvalue, "sv.varvalue");
}
if (match != "")
{
string smatch = " AND mp.match_name='" + match + "'";
sqlGetType += smatch;
NewLabel(match, "mp.match_name");
}
string by = " ORDER BY pl.playact_no,pr.datetime,pr.field,pr.project_no ASC ";
sqlGetType += by;
this.ListView1.DataSource = DBHelper.GetDataSet(sqlGetType).Tables[0];
this.ListView1.DataBind();
}
public void NewLabel(string value, string columnname)
{
Label lab = new Label();
lab.ID = columnname + 1;
lab.Text = value;
lab.Visible = true;
this.myID.Controls.Add(lab);
LinkButton labclose = new LinkButton();
labclose.ID = columnname + 2;
labclose.Text = "×";
labclose.Style.Add("color", "red");
this.myID.Controls.Add(labclose);
labclose.Click += new EventHandler(labclose_click); //关闭
}
然后显示的结果是
：竞技 传统
类型：国际 国内
年份：2011 2012 2013
筛选的条件：竞技X 国际X 2012X
我要的效果是点击2012的Ｘ的时候 就是把２０１２的值清空
岸 2013-03-09
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这样做出的效果就是，我点击一个字段的X 全部的都的label控件都会隐藏，而并不是一个，而且他们也只是不显示 并不是清空。
gxingmin 2013-03-09
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c.Text="";
改成
(c as Label).Text="";
骑着蜗牛去爬山 2013-03-09
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myID.Controls.OfType<TextBox>().ToList().ForEach(t=>t.Text="");
岸 2013-03-09
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这样子会报错，
System.Web.UI.Control”不包含“Text”的定义，并且找不到可接受类型为“System.Web.UI.Control”的第一个参数的扩展方法“Text”(是否缺少 using 指令或程序集引用?)
gxingmin 2013-03-09
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你要是不知道columnname，那你就用遍历吧
foreach(Control c in myID.Controls)
{
if(c is Label)
c.Text="";
}
岸 2013-03-09
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在labclose.Click 事件里面直接这样写吗？
gxingmin 2013-03-09
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Labe lbl =myID.FindControl(columnname + 1) as Label
if(lbl!=null)
lbl.Text="";
岸 2013-03-09
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拜托拜托，对js真心不懂
