相关疑难解决方法(0)

我使用DevexpressGridView来显示所有内容 TOPIC (id,title,content)

<dx:ASPxGridView ID="gv" runat="server"
OnSelectionChanged="gv_SelectionChanged" >

我有grid_SelectionChanged事件:

protected void gv_SelectionChanged(object sender, EventArgs e)
    {

        int id= selected row...???; //how can I get the value of selected row
        string sql = "select * from TOPIC where idTOPIC="+id;
        DataTable topic = l.EXECUTEQUERYSQL(sql);
        TextBox1.Text = topic.Rows[0][1].ToString();
    }

...

似乎gv.SelectedRowDevGridview中不存在方法.

按照建议,我尝试过使用FocusedRowIndex方法,但我真的不知道正确的语法来获取所选行的值.

救命!!!

因此，我从xaml中找到了这个答案Pass命令参数，我认为这是我了解的大多数方法。我遇到的问题是，当我在数据网格中选择一行时，它会触发命令，但所选项目为null。

我不知道并且怀疑是问题所在，我应该将所选项目传递给哪种类型的视图模型？目前，我正在使用IList，如我的viewmodel代码所示：

namespace Project_Manager.ViewModel
{
public class ProjectSummaryViewModel : ObservableObject
{
    public ProjectSummaryViewModel()
    {
        ProjectSummary = DatabaseFunctions.getProjectSummaryData();
    }

    private ObservableCollection<ProjectSummaryModel> projectsummary;
    public ObservableCollection<ProjectSummaryModel> ProjectSummary
    {
        get { return projectsummary; }
        set
        {
            projectsummary = value;
            OnPropertyChanged("ProjectSummary");
        }
    }

    public ICommand DeleteRowCommand
    {
        get { return new ParamDelegateCommand<IList<ProjectSummaryModel>>(DeleteRow); }
    }

    private void DeleteRow(IList<ProjectSummaryModel> projectsummaryselected)
    {
        string name = projectsummaryselected[0].ProjectName;
    }
}
}

数据网格的XAML视图代码如下所示：

<Window x:Class="Project_Manager.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">

<!--<Window.Resources>
    <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
</Window.Resources>-->

    <Grid>
    <Grid.RowDefinitions> …