我绑定usercontrol下拉列表中的值
但是当我添加usercontrol行时,时间值没有在下拉列表中绑定
代码:
的.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TimesheetUserControl.ascx.cs" Inherits="Portal.TimesheetUserControl" %>
<table>
<tr>
<td>
<asp:DropDownList ID="DropDownActivities" Width="150px" runat="server"></asp:DropDownList>
</td>
<td>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</td>
<td>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</td>
<td>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</td>
<td>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
</td>
<td>
<asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
</td>
<td>
<asp:TextBox ID="TextBox7" runat="server"></asp:TextBox>
</td>
</tr>
的.aspx
<uc:Timesheet ID="Timesheet" runat="server" />
<asp:Repeater ID="rpt1" runat="server">
<ItemTemplate>
</ItemTemplate>
</asp:Repeater>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row" OnClick="ButtonAdd_Click"/>
.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostback)
{
BindActivities();
}
}
protected void BindActivities()
{
DropDownList dropActivities = Timesheet.FindControl("DropDownActivities") as DropDownList;
DbConnection.Open();
OleDbCommand cmd1 = new OleDbCommand("select designation from emp_master where username = '" + username + "'", DbConnection);
OleDbDataAdapter da = new OleDbDataAdapter(Deptcmd);
DataSet ds = new DataSet();
da.Fill(ds);
// DbConnection.Close();
dropActivities.DataSource = ds;
dropActivities.DataTextField = "ActivityName";
dropActivities.DataBind();
dropActivities.Items.Insert(0, new ListItem("--Select--", "0"));
}
public List<string> NoOfControls
{
get
{
return ViewState["NoOfControls"] == null ? new List<string>() : (List<string>)ViewState["NoOfControls"];
}
set
{
ViewState["NoOfControls"] = value;
}
}
protected override void LoadViewState(object savedState)
{
base.LoadViewState(savedState);
if (IsPostBack)
{
GenerateControls();
}
}
private void GenerateControls()
{
foreach (string i in NoOfControls)
{
TimesheetUserControl ctrl = (TimesheetUserControl)Page.LoadControl("TimesheetUserControl.ascx");
ctrl.ID = i;
this.rpt1.Controls.Add(ctrl);
}
}
protected void ButtonAdd_Click(object sender, EventArgs e)
{
Button thisButton = (Button)sender;
List<string> temp = null;
var uc = (TimesheetUserControl)this.LoadControl(@"TimesheetUserControl.ascx");
string id = Guid.NewGuid().ToString();
uc.ID = id;
temp = NoOfControls;
temp.Add(id);
NoOfControls = temp;
rpt1.Controls.Add(uc);
}
在下图中,如果添加了单击添加按钮行,但第二个值未在下拉列表中绑定
有什么想法吗?提前谢谢。
答案 0 :(得分:1)
通过您给出的ID找到用户控件,然后您可以在usercontrol中找到DropDownList
。
protected void BindActivities()
{
foreach (string controlName in NoOfControls)
{
TimesheetUserControl userControl = Timesheet.FindControl(controlName) as TimesheetUserControl;
if(userControl == null) return;
DropDownList dropActivities = userControl.FindControl("DropDownActivities") as DropDownList;
if(dropActivities == null) return;
DbConnection.Open();
OleDbCommand cmd1 = new OleDbCommand("select designation from emp_master where username = '" + username + "'", DbConnection);
OleDbDataAdapter da = new OleDbDataAdapter(Deptcmd);
DataSet ds = new DataSet();
da.Fill(ds);
// DbConnection.Close();
dropActivities.DataSource = ds;
dropActivities.DataTextField = "ActivityName";
dropActivities.DataBind();
dropActivities.Items.Insert(0, new ListItem("--Select--", "0"));
}
}