我想让ComboBox的XAML根据它是否有Items来处理它自己的IsEnabled属性。如果后面的代码中的DataTable返回Items,则id类似于要启用的ComboBox,否则如果没有添加Items,它将保留或成为禁用的控件。这是可能吗?
我目前的ComboBox设置:
int count = Integer.parseInt(request.getParameter("count"));
if(count >0){
for(int i=1;i<=count;i++){
//employee_id_numeric=Integer.parseInt(request.getParameter("employee_id")+i);
String employee_id = request.getParameter("txt_Employee_id"+i);
String txt_project_name = request.getParameter("txt_project_name"+i);
String get_header = request.getParameter("txt_Header"+i);
String get_department = request.getParameter("txt_Department"+i);
String get_description = request.getParameter("txt_description"+i);
ps.setString(1, employee_id);
ps.setString(2, txt_project_name);
ps.setString(3, get_header);
ps.setString(4, get_department);
ps.setString(5, get_description);
ps.addBatch();
}
}
ps.executeBatch();
答案 0 :(得分:3)
如果您希望ComboBox
在有项目时启用,并在没有项目时禁用,则可以将IsEnabled
绑定到HasItems属性:
<ComboBox x:Name="ImportDate"
DisplayMemberPath="FileDate"
SelectedValuePath="ID"
ItemsSource="{Binding Mode=OneWay}"
SelectedIndex="0"
Style="{DynamicResource sanComboBox_Standard}"
IsEnabled="{Binding HasItems, RelativeSource={RelativeSource Self}}" />