Enhancing Usability in Visual Studio .NET

Making QR-Code in Visual Studio .NET Enhancing Usability

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Enhancing Usability
Create QR Code In C#
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For i As Integer = 1 to 100
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CopyFiles(i)
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ProgressBar1.PerformStep
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Next // C# // Assumes a ProgressBar control named ProgressBar1 and a time-consuming // method called CopyFiles.
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progressBar1.Minimum = 0;
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progressBar1.Maximum = 100;
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progressBar1.Step = 1;
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for (int i = 0; i < 101; i++)
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CopyFiles(i);
progressBar1.PerformStep();
Displaying Information with the StatusStrip Control
The StatusStrip control allows you to display status information about the application. It s a subclass of the ToolStrip control and can host ToolStripItems. ToolStrip controls were covered in detail in 4, ToolStrips, Menus, and Events. This section will focus on using the StatusStrip control to display information to the user. The StatusStrip control is generally docked at the bottom edge of the form, although, like all ToolStrip controls, it can be docked at any edge, or it can even be undocked. You can add ToolStripItems to the Status strip either in the Designer or in code, as described in 4. The two ToolStripItems that are commonly used to display information to the user in the StatusStrip control are the ToolStripStatusLabel control and the ToolStripProgressBar control. The ToolStripStatusLabel is a ToolStripItem control that emulates a Label con trol but resides in the StatusStrip control. The most important property of the ToolStripStatusLabel is the Text property, which represents the text that is displayed in the ToolStripStatusLabel control. You can set the text property, as shown in the following example:
' VB ToolStripStatusLabel1.Text = "Meltdown Imminent" // C# toolStripStatusLabel1.Text = "Meltdown Imminent";
The ToolStripProgressBar is a ToolStripItem control that emulates a ProgressBar control. ToolStripProgressBar exposes Minimum, Maximum, Step, and Value properties like the
Lesson 2: Using User Assistance Controls and Components
ProgressBar control does, and these properties function in the same way as described in the previous section. Likewise, the ToolStripProgressBar exposes Increment and PerformStep methods that advance the value in the same way as they do for the ProgressBar control.
The ToolTip Component
The ToolTip component allows you to set tooltips for controls. Tooltips appear in popup windows when the mouse hovers over the control, and they can provide short pieces of information about the control to the user. Important properties of the ToolTip component are described in Table 12-5.
Table 12-5 Important Properties of the ToolTip Component
Property Active AutomaticDelay AutoPopDelay IsBalloon ReshowDelay
Description Indicates whether the ToolTip component is active. Gets or sets the delay for the ToolTip component. Gets or sets the period of time the tooltip remains visible if the pointer is stationary on a control with specified ToolTip text. Gets or sets a value indicating whether the tooltip should use a balloon window. Gets or sets the length of time that must transpire before sub sequent ToolTip windows appear as the pointer moves from one control to another. Gets or sets a value indicating whether a ToolTip window is dis played, even when its parent control is not active. Gets or sets a value that defines the type of icon to be displayed alongside the tooltip text. Gets or sets a title for the ToolTip window. Gets or sets a value determining whether an animation effect should be used when displaying the tooltip. Gets or sets a value determining whether a fade effect should be used when displaying the tooltip.
ShowAlways ToolTipIcon ToolTipTitle UseAnimation UseFading
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Enhancing Usability
The ToolTip component also exposes two key methods: GetToolTip and SetToolTip. These methods are used to retrieve and set the tooltip text for a specified control. When the ToolTip component is correctly configured, tooltips for controls in the form are shown automatically when the mouse hovers over the control. This requires the following:
The ToolTip.Active property must be set to True. There must be a ToolTip set for that control. The control must be active, or the ToolTip.ShowAlways property must be set to True.
You can set tooltips for controls at either design time or run time. At design time, the ToolTip component creates a design-time property for each control in the form. For example, if you add a ToolTip component named ToolTip1 to your form, each control will gain a design-time property called ToolTip on ToolTip1. This property can be set only at design time and represents the tooltip text for that control.
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