用数据填充程序。.Visual Studio 2012和SQL Server Management Studio

Question

I'm trying to populate a database I creaed for a project and got this error...

'System.Windows.Controls.Grid' does not contain a definition for 'ItemsSource' and no extension method 'ItemsSource' accepting a first argument of type 'System.Windows.Controls.Grid' could be found (are you missing a using directive or an assembly reference?)

Code:

namespace WalkthroughV2 { 
        ///<summary>
        /// Interaction logic for MainWindow.xaml
        /// </summary>
        public partial class MainWindow : Window
        { 
           private List<Student> studentList;


            }

            private void Refresh()
            {
                StudentService studentService = new StudentService();

                studentList = studentService.GetAll();
                grdData.ItemsSource = studentList;
            }
        }
}

Answer 1

You have to add rows and columns programmatically, as shown in this document .

A small example:

Grid myGrid = new Grid();
ColumnDefinition colDef1 = new ColumnDefinition();
RowDefinition rowDef1 = new RowDefinition();
myGrid.ColumnDefinitions.Add(colDef1);
myGrid.RowDefinitions.Add(rowDef1);

// Add the first text cell to the Grid
TextBlock txt1 = new TextBlock();
txt1.Text = "2005 Products Shipped";
txt1.FontSize = 20; 
txt1.FontWeight = FontWeights.Bold;
Grid.SetColumnSpan(txt1, 3);
Grid.SetRow(txt1, 0);

A full tutorial can be found in the same document .

---

To solve your problem of why ItemsSource is not available; you are using a Grid. In your WPF-Project, there is also a DataGrid available.

A tutorial shown in this document explains how to display data in a DataGrid .

ObjectQuery<Product> products = dataEntities.Products;

var query =
    from product in products
    where product.Color == "Red" 
    orderby product.ListPrice
    select new { product.Name, product.Color, CategoryName = product.ProductCategory.Name, product.ListPrice };

 dataGrid1.ItemsSource = query.ToList();

And the DataGrid has to be placed inside a Grid:

<Window x:Class="DataGridSQLExample.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="450" 
    Loaded="Window_Loaded">
    <Grid>
          <DataGrid Name="dataGrid1" />
    </Grid>
</Window>