Introduction:In a Silverlight project that is opened in Expression Blend, you can add transitions between timelines of a state for a control. This means that when a change takes place from one state to another, a time delay can be introduced. The default transition duration for all the transitions between the states in the CommonStates state group is 0 seconds. For example, it takes 0 seconds to change from any state to the Normal state. It is possible to change this default transition duration.Let us see how you can do this. Assume that a Silverlight 2 application named ShoppingStore has been created in Blend. Considering that you have a button control named btnSubmit, let us see how you can add transitions to it.Open the Interaction pane in the Blend IDE. You will need to create a reusable template for the button control. To do this, click the Edit Template option in the shortcut menu for btnSubmit as shown in Figure 1. Figure 1Add a state action for MouseOver such as a button transform action. On the MouseOver state, you can see a plus symbol. This leads to the Add Transition option as shown in Figure 2.Figure 2Select the Add Transition option and add a new transition.Figure 3You can see the various transition options displayed, such as MouseOver to Normal, MouseOver to Pressed and so forth. Select MouseOver->Normal. You can see an arrow and a star in front of the state. It indicates "from any state to this one."Specify 1.5 seconds in the box as shown in Figure 4.Figure 4Once this is done, save, build and test your application. Move the mouse over the button Submit. You will find that there is a delay of 1.5 seconds when the mouse state changes from mouse over to normal. This delay causes a transition effect for the control. For example, in this case, when the button is being transformed, the slow duration causes an animation-like effect on the button. Conclusion: This article showed you how to create transitions in a Silverlight application using Blend.
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