Controls created on one thread cannot be parented to a control on a different thread - Adding DataGridView to TabPage to TabControl

Question

I am pragmatically creating TabPage with DataGridView. The TabPage's are appearing correctly, but they are missing the DataGridView. Anyone able to discern why they DGV's are not appearing with the tabs? The LoadDataGridToTab is in the correct form. It is being called from another Form though. Should?

    public void LoadDataGridToTab(Main main, string category)
    {
        try
        {
            //Set Cell Style
            var dataGridViewCellStyle = new DataGridViewCellStyle
            {
                Alignment = DataGridViewContentAlignment.MiddleLeft,
                BackColor = SystemColors.Control,
                Font = new Font("Microsoft Sans Serif", 8.25F,
                    FontStyle.Regular, GraphicsUnit.Point, 0),
                ForeColor = SystemColors.WindowText,
                SelectionBackColor = SystemColors.Highlight,
                SelectionForeColor = SystemColors.HighlightText,
                WrapMode = DataGridViewTriState.True
            };

            //Make the Grid
            var grid = new DataGridView
            {
                Name = "dgv_" + category,
                Text = category,
                Visible = true,
                Dock = DockStyle.Fill,
                AllowUserToAddRows = false,
                AllowUserToDeleteRows = false,
                AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill,
                ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize,
                ColumnHeadersDefaultCellStyle = dataGridViewCellStyle,
                DataSource = Auction.CacheAuctionsDataSet.Tables[category]
            };

            //Binding
            //var source = new BindingSource();
            //source.DataSource = CacheAuctionsDataSet.Tables[category];

            //Made the Tab
            var tmpTabPage = new TabPage(category)
            {
                Name = "tabctrl_" + category,
                Text = category,
                Visible = true
            };

            //Add the Grid to the Tab
            tmpTabPage.Controls.Add(grid);
            tmpTabPage.Refresh();

            //Add the Tab to the Control
            tabctrl_Auctions.Controls.Add(tmpTabPage);
            tabctrl_Auctions.Refresh();
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }

    }

This is getting called from a non-ui thread. I was thinking I might need to methodinvoke? — , Oct 11 '14 at 16:03
I talk a better game than I can perform evidently. Would you happen to have a stackoverflow reference on how to do that? I have been doing my best to make it happen, but failing miserably atm. — , Oct 11 '14 at 17:05

score 0 · Accepted Answer · edited May 23 '17 at 10:33

0

You need to use the Invoke method.

An example is found here https://stackoverflow.com/a/253150/2633161

edited May 23 '17 at 10:33

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answered Oct 11 '14 at 17:17

JohnKiller

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Controls created on one thread cannot be parented to a control on a different thread - Adding DataGridView to TabPage to TabControl

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