asp.net repeater_asp.net core

全栈程序员-站长 • 2022年10月13日上午11:00 • 未分类 • 阅读 4

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asp.net在Repeater嵌套的Repeater中使用复选框
来自森大科技官方博客 http://www.cnsendblog.com/index.php/?p=109
.aspx文件中：
<%–顶层Repeater–%>
<asp:Repeater ID=“rptChannel” runat=“server”>

<%# Eval(“ChannelName”)%>
<%–嵌套的Repeater,指定使用后台创建的Releation来获取数据源–%>
<asp:Repeater ID=“rptClassify” DataSource=’<%# Eval(“myrelation”) %>’ runat=“server”>

<asp:Label ID=“lbl_FlagName” runat=“server” Text=’<%# Eval(“FlagName”)%>’></asp:Label>

</asp:Repeater >
<%–end 嵌套的Repeater,指定使用后台创建的Releation来获取数据源–%>

</asp:Repeater >
<%–end 顶层Repeater–%>
.aspx.cs文件中：
#region Repeater嵌套的Repeater中使用复选框
//★Repeater嵌套-经典运用★
string sqlstr1, sqlstr2;
sqlstr1 = “select distinct a.ChannelID,b.ChannelName from IE_FlagGroup a left join IE_Channel b on a.ChannelID=b.ChannelID where a.isClose=0 order by a.ChannelID asc”;
sqlstr2 = “select * from IE_FlagGroup where isClose=0 order by FlagID asc”;
DataSet dsChannel = DBFun.dataSetTwo(sqlstr1, “Channel”, sqlstr2, “Classify”, “myrelation”);
dsChannel.Relations.Add(“myrelation”, dsChannel.Tables[“Channel”].Columns[“ChannelID”], dsChannel.Tables[“Classify”].Columns[“ChannelID”], false);
this.rptChannel.DataSource = dsChannel.Tables[“Channel”];//绑定顶层Repeater（注意：只要绑定顶层就好，嵌套层不能绑定）
this.rptChannel.DataBind();
#endregion
//……略相关数据库操作代码
#region 设置Repeater嵌套的Repeater中相应的复选框为选中状态
string[] selTeamflag = drw[“Teamflag”].ToString().Split(’,’);
HtmlInputCheckBox checkBox;
Repeater rpClass;
for (int i = 0; i < this.rptChannel.Items.Count; i++)
{

rpClass = (Repeater)this.rptChannel.Items[i].FindControl(“rptClassify”);
for (int j = 0; j < rpClass.Items.Count; j++)
{

checkBox = (HtmlInputCheckBox)rpClass.Items[j].FindControl(“chk_FlagID”);
if (selTeamflag.Contains(checkBox.Value))
checkBox.Checked = true;
}
}
#endregion
#region 获取Repeater嵌套的Repeater中的复选框所选择的值的组合,以”,”隔开
string str_Teamflag = “”;
HtmlInputCheckBox checkBox;
Repeater rpClass;
for (int i = 0; i < this.rptChannel.Items.Count; i++)
{

rpClass = (Repeater)this.rptChannel.Items[i].FindControl(“rptClassify”);
for (int j = 0; j < rpClass.Items.Count; j++)
{

checkBox = (HtmlInputCheckBox)rpClass.Items[j].FindControl(“chk_FlagID”);
if (checkBox.Checked)
str_Teamflag += checkBox.Value + “,”;
}
}
if (str_Teamflag != “”)
{

//去除最后一个字符
//str_Teamflag = str_Teamflag.Substring(0, str_Teamflag.Length – 1);
str_Teamflag = str_Teamflag.Remove(str_Teamflag.Length – 1);
}
#endregion