vb.net 在多选 RadComboBox 中设置“选定项目”
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Set "Selected Item" in multiselect RadComboBox
提问by Rahul
Is there any way we can set Selected Items or Checked Items in a multiselect RadComboBox ?. I want to set value on postback from server.
有什么方法可以在多选 RadComboBox 中设置 Selected Items 或 Checked Items 吗？我想设置从服务器回发的值。
I tried following code but that works only if it is not a multiselect RadComboBox.
我尝试了以下代码，但仅当它不是多选 RadComboBox 时才有效。
Radbox1.SelectedValue = "123"
Radbox1.SelectedValue = "123"
My front end code.
我的前端代码。
<telerik:RadComboBox ID="Radbox1" runat="server" CheckBoxes="true" EnableCheckAllItemsCheckBox="true"
Width="300" Height="200" AutoPostBack="True" OnSelectedIndexChanged="Radbox1_SelectedIndexChanged" />
<telerik:RadComboBox ID="Radbox1" runat="server" CheckBoxes="true" EnableCheckAllItemsCheckBox="true"
Width="300" Height="200" AutoPostBack="True" OnSelectedIndexChanged="Radbox1_SelectedIndexChanged" />
I have value in Radbox1 which will be populated from database.
我在 Radbox1 中有值，它将从数据库中填充。
Thanks, Rahul
谢谢，拉胡尔
回答by KreepN
When the Radcombobox is set to allow multiple selections via the checkboxes, you must use each items checked property.
当 Radcombobox 设置为允许通过复选框进行多项选择时，您必须使用每个项目的检查属性。
I use a list here to simulate the items that I wish to have marked on postback. You could have this list pre-populated or it could even be loaded from a database:
我在这里使用一个列表来模拟我希望在回发时标记的项目。您可以预先填充此列表，甚至可以从数据库加载它：
回答by zey
protected void RadComboBox1_ItemDataBound(object sender, RadComboBoxItemEventArgs e)
{
if ("YourString" == e.Item.Text))
{
e.Item.Checked = true;
}
}
Or
或者
protected void RadComboBox1_ItemDataBound(object sender, RadComboBoxItemEventArgs e)
{
List<String> yourStringList = new List<String>() {"string1","string2"};
if (yourStringList.Contains(e.Item.Text))
{
e.Item.Checked = true;
}
}
回答by Mahib
I've done something like this; Machine_Serial_Numbersis a telerik:RadComboBox;
我做过这样的事情；Machine_Serial_Numbers是Telerik的：radcombobox控件;
foreach (var machine in bulletinData.Machines)
{
var comboItem = Machine_Serial_Numbers.FindItemByValue(machine.Id.ToString());
if (comboItem != null)
{
comboItem.Checked = true;
}
}
This worked for me.
这对我有用。
