WPF Datagrid read a cell value

datagridwpf

I am trying to find out how to read the value of my WPF datagrid cells.

something along the lines of

String myString = myDataGrid.Cells[1][2].ToString();

the datagrid has been created in XAML and i have populated the datagrid with row data by using

reportGrid.Items.Add(new cbResultRow() { ... });

now I want to go back and read cell values in my datagrid.

I have seen some examples of reading data from a selected row or cell, by I don't have any selection (the user doesnt interact with the datagrid).

i have also seen code like

foreach(DataGridRow myrow in myDataGrid.Rows)

however the compiler says Rows is not a member of datagrid.

I have searched for several hours to try to find out how to do what I would have thought was a very simple thing!

please help,

Thanks,
will.

Best Answer

The WPF datagrid was built to bind to something like a DataTable. The majority of the time, you will modify the DataTable, and the Rows/Columns within the DataTable that is bound to the DataGrid.

The DataGrid itself is the Visual Element for the DataTable. Here is a pretty good tutorial on how to do this. To modify data within a loop would look something like this.

foreach(DataRow row in myTable.Rows)
{
    row["ColumnTitle"] = 1;
}

This would simply make all the values in Column "ColumnTitle" equal to 1. To access a single cell it would look something like this.

myTable.Rows[0][0] = 1;

This would set the first cell in your DataTable to 1.

Related Solutions

WPF – How to get a cell from a DataGridRow

If you know your row and index of the cell you'd like to access, then here's how you can do it in code:

//here's usage
var cell = myDataGrid.GetCell(row, columnIndex);
if(cell != null)
    cell.Background = Brushes.Green;

DataGrid Extension:

public static class DataGridExtensions
{
    public static DataGridCell GetCell(this DataGrid grid,  DataGridRow row, int columnIndex = 0)
    {
        if (row == null) return null;

        var presenter = row.FindVisualChild<DataGridCellsPresenter>();
        if (presenter == null) return null;

        var cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
        if (cell != null) return cell;

        // now try to bring into view and retreive the cell
        grid.ScrollIntoView(row, grid.Columns[columnIndex]);
        cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);

        return cell;
    }

Jquery – How to POST an object’s model for use in a view via ajax

Use a custom filter like described by michael and use django.db.model.get_model to retrieve a objects my provideing app name and model name

To retrieve both informations at once, a custom tag might be more useful than a filter

more informations about get_model in this article: http://www.b-list.org/weblog/2006/jun/07/django-tips-write-better-template-tags/

Best Answer

Related Solutions

WPF – How to get a cell from a DataGridRow

Jquery – How to POST an object’s model for use in a view via ajax

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