How to change Text color on a tab using TabControl?

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I am using a TabControl with two TabPages.

TabPage 1 Text: "Test Data" and has a Test Data UserControl with a listview
TabPage 2 Text: "Real Data" and has a Real Data UserControl with a listview

I am trying to change the text color of TabPage 2 from black to blue when a new item gets added to the list.

TabPage 2:

public void RealDataCount()
{
  int total = this._realDataView.GetRealDataCountInList();
  this.RealDataPage.Text = string.Format("Real Data: {0}", total);
}

GetRealDataCountInList() - this method just goes into the ReadDataUserControl and get a count of items in the list.

Can someone please help me.

If you have any other questions or more insight what I am trying to do please let me know.

Thanks

Posted 16-Apr-14 9:15am

Member 10622146

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Comments

Sergey Alexandrovich Kryukov 16-Apr-14 15:47pm

Did you try ForeColor?
—SA

Member 10622146 16-Apr-14 15:51pm

Yes, it does not change the tab text.

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Emre Ataseven · Answer 1 · 2014-04-16T10:14:00

First of all you need a new listview control cuz current one does not have ItemAdded event, so;

C#

public class MyListView : ListView
{
    public event EventHandler ItemAdded;

    protected override void WndProc(ref Message m)
    {
        base.WndProc(ref m);
        switch (m.Msg)
        {
            case 0x1007:    //ListViewItemAdd-A
                if (ItemAdded != null)
                    ItemAdded(this, null);
                break;
            case 0x104D:    //ListViewItemAdd-W
                if (ItemAdded != null)
                    ItemAdded(this, null);
                break;
            case 0x1008: //Item removed
                System.Diagnostics.Debug.WriteLine("Item removed");
                break;
            default:
                break;
        }
    }
}

then put it in your usercontrol, and your usercontrol should be something like this;

C#

public partial class ReadDataUserControl : UserControl
    {
        public event EventHandler ItemAddedToListView;

        public ReadDataUserControl()
        {
            InitializeComponent();
            myListView1.ItemAdded += this.myListView1_ItemAdded;
        }

        private void myListView1_ItemAdded(object sender, EventArgs e)
        {
            if (ItemAddedToListView != null)
                ItemAddedToListView(this, e);
        }
...

Then in your form (where tabcontrol is located);

C#

public partial class FormHome : Form
    {

        public FormHome()
        {
            InitializeComponent();

            readDataUserControl1.ItemAddedToListView += readDataUserControl1_ItemAddedToListView;
        }


        private void readDataUserControl1_ItemAddedToListView(object sender, EventArgs e)
        {
            if ((sender as Control).Parent is TabPage)
            {
                (sender as Control).Parent.Tag = Color.Blue;
                tabControl1.Refresh();
            }
        }

Change your tabcontrol's draw mode to OwnerDrawFixed we should draw tabs manually cuz headers don't have forecolor property;

C#

private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
    Graphics g = e.Graphics;
    Brush _TextBrush;

    TabPage _TabPage = tabControl1.TabPages[e.Index];

    Rectangle _TabBounds = tabControl1.GetTabRect(e.Index);
    e.DrawBackground();

    if (tabControl1.TabPages[e.Index].Tag != null)
    {
        _TextBrush = new SolidBrush((Color)tabControl1.TabPages[e.Index].Tag);
    }
    else
    {
        _TextBrush = new System.Drawing.SolidBrush(e.ForeColor);
    }

    Font _TabFont = e.Font;

    // Draw string. Center the text.
    StringFormat stringFlags = new StringFormat();
    stringFlags.Alignment = StringAlignment.Center;
    stringFlags.LineAlignment = StringAlignment.Center;
    g.DrawString(tabControl1.TabPages[e.Index].Text, _TabFont, _TextBrush,
                 _TabBounds, new StringFormat(stringFlags));
}

Set tag of tabpage to null and refresh tabcontrol to return to default color.