How can I select a row in 2 DataGridViews when selected in a third DataGridView?

Question

I have 3 DataGridViews. With DataGridView1 and DataGridView2 you can select rows. After pushing a button the rows from DataGridView1 and DataGridView2 are compared and every row that has the same values are set in DataGridView3.

What I want is when you select a row in DataGridView3, the same rows are selected in DataGridView1 and DataGridView2.

The code I have, and also works is:

private int ShowSelected(int selectedId, Boolean sBool)
{
    DataTable dt = DataGridView1.DataSource;

    if(!sBool)
        currentGrid = DataGridView1;


    int indexCounter = 0;            
        foreach (DataRow dr in dt.Rows)
        {
            int cellIdDgv = Convert.ToInt32(dr["cellId"]);

                if (selectedId == cellIdDgv)
                {
                    if (sBool)
                    {
                        DataGridView1.Rows[indexCounter].Selected = true;
                        DataGridView1.FirstDisplayedCell = DataGridView1.Rows[indexCounter].Cells[0];
                    }
                    else
                    {
                        DataGridView2.Rows[indexCounter].Selected = true;
                        DataGridView2.FirstDisplayedCell = DataGridView2.Rows[indexCounter].Cells[0];
                    }
                }

        indexCounter++;
    }
}

But what I want is something like this, so you don't have to loop through the whole Grid:

string selection = "cellId = " + selectedId;
DataRow[] drResult = dt.Select(selection);
int rowId  = drResult.RowId;

if (sBool)
{
    DataGridView1.Rows[rowId].Selected = true;
        DataGridView1.FirstDisplayedCell = DataGridView1.Rows[rowId].Cells[0];
}
else
{
    DataGridView2.Rows[rowId].Selected = true;
        DataGridView2.FirstDisplayedCell = DataGridView2.Rows[rowId].Cells[0];
}

How can I make this work?

Answer 1

To extend on my comment and to provide a local (stackoverflow) solution:

Filtering is accomplished using the BindingSource.Filter property. The example provided on MSDN is:

    private void PopulateDataViewAndFilter()
    {
        DataSet set1 = new DataSet();

        // Some xml data to populate the DataSet with.
        string musicXml =
             "<?xml version='1.0' encoding='UTF-8'?>" +
             "<music>" +
             "<recording><artist>Coldplay</artist><cd>X&amp;Y</cd></recording>" +
             "<recording><artist>Dave Matthews</artist><cd>Under the Table and Dreaming</cd></recording>" +
             "<recording><artist>Dave Matthews</artist><cd>Live at Red Rocks</cd></recording>" +
             "<recording><artist>Natalie Merchant</artist><cd>Tigerlily</cd></recording>" +
             "<recording><artist>U2</artist><cd>How to Dismantle an Atomic Bomb</cd></recording>" +
             "</music>";

        // Read the xml.
        StringReader reader = new StringReader(musicXml);
        set1.ReadXml(reader);

        // Get a DataView of the table contained in the dataset.
        DataTableCollection tables = set1.Tables;
        DataView view1 = new DataView(tables[0]);

        // Create a DataGridView control and add it to the form.
        DataGridView datagridview1 = new DataGridView();
        datagridview1.AutoGenerateColumns = true;
        this.Controls.Add(datagridview1);

        // Create a BindingSource and set its DataSource property to
        // the DataView.
        BindingSource source1 = new BindingSource();
        source1.DataSource = view1;

        // Set the data source for the DataGridView.
        datagridview1.DataSource = source1;

        //The Filter string can include Boolean expressions.
        source1.Filter = "artist = 'Dave Matthews' OR cd = 'Tigerlily'";
    }

To make it easier, you may want to create a FilterBuilder .

Edit: To avoid filtering or the above looping mentioned in your question, create a DataTable using a BindingSource etc. which is linked to your `DataGridView1 then:

DataTable DT; // Obtained from the relevent DGV.
DataView view = new DataView(DT);
DataView thisDV = new DataView();

// Then you can use...
thisDV.Find(thisOrThat);
thisDV.FindRows(thisOrThat);

To find the relevant rows in the data, this can then be used to feed a Selection() in you DataGridView s.

I hope this helps.