Setting tooltip width and height dynamically

Question

In WPF (C#) is there a way to set the tooltip's height and width dynamically (meaning in code). Thanks for the help.

System.Windows.Controls.Image td = new System.Windows.Controls.Image();

BitmapImage myBitmapImage = new BitmapImage();
            myBitmapImage.BeginInit();
            myBitmapImage.UriSource = new Uri(Directory.GetCurrentDirectory() + "/Homepage.jpg");
            td.Width = 530;
            td.Height = 392;
            //myBitmapImage.DecodePixelWidth = 430;
            //myBitmapImage.DecodePixelHeight = 292;
            myBitmapImage.EndInit();
            td.Source = myBitmapImage;

            TextBlock textBlock = new TextBlock();
            BrushConverter conv = new BrushConverter();
            string strColor1 = bannerColor.SelectedItem.ToString();
            strColor1 = strColor1.Substring(strColor1.IndexOf(' ') + 1);
            SolidColorBrush col = conv.ConvertFromString(strColor1) as SolidColorBrush;

            textBlock.Foreground = col;
            textBlock.FontWeight = FontWeights.Bold;
            textBlock.FontSize = 18;
            textBlock.FontFamily = new System.Windows.Media.FontFamily("Tahoma");
            textBlock.Width = 100;
            textBlock.Height = 20;
            textBlock.Text = "BACKUP";
            textBlock.Margin = new Thickness(5, 5, 425, 367);

            Grid toolTipPanel = new Grid();
            toolTipPanel.Width = 530;
            toolTipPanel.Height = 392;
            toolTipPanel.Children.Add(td);
            toolTipPanel.Children.Add(textBlock);

            ToolTipService.SetToolTip(image1, toolTipPanel);
            ToolTipService.SetShowDuration(image1, 999999999);`

eesh · Accepted Answer · 2010-12-20 17:21:57Z

3

In your code just set the tooltip's height and width property to Double.NaN to have the width and height adjust dynamically.

_toolTip.Width = Double.NaN;
_toolTip.Height = Double.NaN;

This will do the trick.

answered Dec 20, 2010 at 17:21

eesh

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Comments

Charlie · Accepted Answer · 2009-07-22 22:29:20Z

1

A tool tip's height and width are based on its content. So you should simply make the content the size you want it to be.

Perhaps you could post your code that sets the tool tip, for further clarification?

answered Jul 22, 2009 at 22:29

Charlie

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2 Comments

Jake Over a year ago

there's the code. So the problem is the image appears inside the tool tip but there is a gap between the tooltip and the image and i want the image to cover all of the tooltip area

Jake Over a year ago

Oop, nvm fixed it. Thanks for your time.

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