我有什么
我有一个网格视图绑定到一些数据源。在内部我已经添加了另一个列(“资源”)明确限制到另一个数据源。
Code.aspx
<asp:GridView ID="GridView1" OnRowCommand="GridView1_RowCommand" OnRowDataBound="GridView1_RowDataBound" runat="server" AutoGenerateColumns="False" DataSourceID="EntityDataSource1">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" ReadOnly="True" SortExpression="Name" />
<asp:BoundField DataField="Description" HeaderText="Description" ReadOnly="True" SortExpression="Description" />
<asp:BoundField DataField="TFSId" HeaderText="TFSId" ReadOnly="True" SortExpression="TFSId" />
<asp:CheckBoxField DataField="IsBillable" HeaderText="IsBillable" ReadOnly="True" SortExpression="IsBillable" />
<asp:BoundField DataField="Estimate" HeaderText="Estimate" ReadOnly="True" SortExpression="Estimate" />
<asp:BoundField DataField="Id" HeaderText="Id" ReadOnly="True" SortExpression="Id" />
<asp:TemplateField HeaderText="Resources">
<ItemTemplate >
<asp:UpdatePanel ID="updatepanel1" runat="server" >
<ContentTemplate>
<asp:TextBox ID="TextBox1" runat="server" Width="100px"></asp:TextBox>
<asp:PopupControlExtender ID="TextBox1_PopupControlExtender" runat="server"
Enabled="True" TargetControlID="TextBox1"
PopupControlID="Panel1" OffsetY="22">
</asp:PopupControlExtender>
<asp:Panel ID="Panel1" runat="server" Height="116px" Width="145px"
BorderStyle="Solid" BorderWidth="2px" Direction="LeftToRight"
ScrollBars="Auto" BackColor="#CCCCCC" Style="display: none">
<asp:CheckBoxList ID="CheckBoxList1" runat="server"
DataSourceID="SqlDataSource1" DataTextField="UserId"
DataValueField="UserId" AutoPostBack="True"
OnSelectedIndexChanged="CheckBoxList1_SelectedIndexChanged">
</asp:CheckBoxList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:42HNetDbConnectionString %>"
SelectCommand="SELECT DISTINCT [UserId] FROM [Resources]">
</asp:SqlDataSource>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
我想要的是什么:
用户单击文本框后,我就能够显示所有资源名称。用户可以选择他/她想要的尽可能多的资源。我需要实现以下目标:
1.我想在用户点击复选框列表时立即显示所有资源的逗号分隔名称。为此,我创建了onselectedindexchanged事件。
2.我也想知道如何记住用户上次选择的内容,因为它不记得。
我尝试了什么:
代码背后
protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
{
/*
string name = "";
for (int i = 0; i < CheckBoxList1.Items.Count; i++)
{
if (CheckBoxList1.Items[i].Selected)
{
name += CheckBoxList1.Items[i].Text + ",";
}
}
TextBox1.Text = name;*/
}
真正的问题是我无法在onselectedindexchanged事件中访问CheckBoxList。
How to access textbox, label inside update panel from code behind using asp.net web forms似乎不那么有用。
任何帮助将不胜感激。感谢!!!
答案 0 :(得分:2)
最后我明白了:
代码背后
protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
{
for (int j = 0; j < GridView1.Rows.Count; j++)
{
UpdatePanel up1 = GridView1.Rows[j].FindControl("updatepanel1") as UpdatePanel;
TextBox tb1 = up1.FindControl("TextBox1") as TextBox;
CheckBoxList cb1 = up1.FindControl("CheckBoxList1") as CheckBoxList;
string name = "";
for (int i = 0; i < cb1.Items.Count; i++)
{
if (cb1.Items[i].Selected)
{
name += cb1.Items[i].Text + ",";
}
}
tb1.Text = name;
}
}
答案 1 :(得分:0)
string strVendorId = string.Empty;
var vender = new StringBuilder();
var vendorcollection = cmbVendorId.CheckedItems;
foreach (var item in vendorcollection)
vender.Append(item.Value + ",");
strVendorId = vender.ToString();
if (strVendorId != "")
{
strVendorId = strVendorId.Remove(strVendorId.Length - 1, 1);
}
你可以使用此代码作为逗号分隔的参考代码