Display a tooltip over a button using Windows Forms

Question

How can I display a tooltip over a button using Windows Forms

User · Answer

The ToolTip is a single WinForms control that handles displaying tool tips for multiple elements on a single form  Say your button is called MyButton   Add a ToolTip control  under Common Controls in the Windows Forms toolbox  to your form  Give it a name - say MyToolTip Set the  quot Tooltip  on MyToolTip quot  property of MyButton  under Misc in the button property grid  to the text that should appear when you hover over it   The tooltip will automatically appear when the cursor hovers over the button  but if you need to display it programmatically  call MyToolTip Show  quot Tooltip text goes here quot   MyButton    in your code to show the tooltip  and MyToolTip Hide MyButton    to make it disappear again

User · Answer

You can use the ToolTip class   Creating a ToolTip for a Control   Example   private void Form1 Load object sender  System EventArgs e        System Windows Forms ToolTip ToolTip1   new System Windows Forms ToolTip        ToolTip1 SetToolTip this Button1   Hello

User · Answer

Sure  just handle the mousehover event and tell it to display a tool tip  t is a tooltip defined either in the globals or in the constructor using   ToolTip t   new ToolTip      then the event handler   private void control MouseHover object sender  EventArgs e      t Show  Text    Control sender

User · Answer

The  NET framework provides a ToolTip class  Add one of those to your form and then on the MouseHover event for each item you would like a tooltip for  do something like the following  private void checkBox1 MouseHover object sender  EventArgs e        toolTip1 Show  quot text quot   checkBox1

User · Answer

Based on DaveK s answer  I created a control extension  public static void SetToolTip this Control control  string txt        new ToolTip   SetToolTip control  txt      Then you can set the tooltip for any control with a single line  this MyButton SetToolTip  quot Hello world quot

User · Answer

Using the form designer    Drag the ToolTip control from the Toolbox  onto the form  Select the properties of the control you want the tool tip to appear on  Find the property  ToolTip on toolTip1   the name may not be toolTip1 if you changed it s default name   Set the text of the property to the tool tip text you would like to display    You can set also the tool tip programatically using the following call   this toolTip1 SetToolTip this targetControl   My Tool Tip

User · Answer

Lazy and compact storing text in the Tag property If you are a bit lazy and do not use the Tag property of the controls for anything else you can use it to store the tooltip text and assign MouseHover event handlers to all such controls in one go like this  private System Windows Forms ToolTip ToolTip1  private void PrepareTooltips         ToolTip1   new System Windows Forms ToolTip        foreach Control ctrl in this Controls                if  ctrl is Button  amp  amp  ctrl Tag is string                        ctrl MouseHover    new EventHandler delegate Object o  EventArgs a                                var btn    Control o                  ToolTip1 SetToolTip btn  btn Tag ToString                                        In this case all buttons having a string in the Tag property is assigned a MouseHover event  To keep it compact the MouseHover event is defined inline using a lambda expression  In the event any button hovered will have its Tag text assigned to the Tooltip and shown

User · Answer

private void Form1 Load object sender  System EventArgs e        ToolTip toolTip1   new ToolTip        toolTip1 AutoPopDelay   5000      toolTip1 InitialDelay   1000      toolTip1 ReshowDelay   500      toolTip1 ShowAlways   true      toolTip1 SetToolTip this button1   My button1        toolTip1 SetToolTip this checkBox1   My checkBox1

User · Answer

For default tooltip this can be used -  System Windows Forms ToolTip ToolTip1   new System Windows Forms ToolTip    ToolTip1 SetToolTip this textBox1   Hello world      A customized tooltip can also be used in case if formatting is required for tooltip message  This can be created by custom formatting the form and use it as tooltip dialog on mouse hover event of the control  Please check following link for more details -  http   newapputil blogspot in 2015 08 create-custom-tooltip-dialog-from-form html

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