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# Terminal Emulator code samples (.NET SDK)

In this topic:

## Wait for text in the emulator screen

This example demonstrates how to use terminal emulator objects and their respective properties to wait for a text in the emulator screen.

    [Test]
    public void TestWaitForText()
    {
    	// Following is the program flow:
    	// 1. Need to have a Terminal Emulator configured.
    	// 2. Identify a TeScreen test object based on some descriptive properties.
    	// 3. Select text from the emulator screen that you want to wait for. Example "Program/procedure". OR
    	//    The user can insert text into a field and verify with WaitForText method if the text was inserted.
    	// 4. Define an Area() object where the text is located and select the timeout in milliseconds.
    	// 5. Call method WaitForText() with all above parameters and for the text string use regular expression to find it.
    	// 6. The test has two cases: when the text exists on the screen and when not.
    	// 7. Use the Verify statement to verify that "Program/procedure" exsists on the emulator screen.

    	//Identify IWindow and IScreen based on descriptive properties.
    	IScreen screen = Desktop.Describe<IWindow>(new WindowDescription
    	{

    		EmulatorStatus = HP.LFT.SDK.TE.EmulatorStatus.Ready,
    		Protocol = HP.LFT.SDK.TE.Protocol.Pr5250

    	}).Describe<IScreen>(new ScreenDescription
    	{
    		Label = @"screen10365"
    	});

    	//Identify IField based on descriptive properties.
    	IField field = screen.Describe<IField>(new FieldDescription
    	{
    		AttachedText = @"User",
    		IsProtected = false
    	});

    	//Insert dummy text to an unprotected field.
    	field.SetText("Something");

    	//Call WaitForText method with the inserted text to find it on the emulator screen.
    	//The method returns a bool to indicate if the text was found or not. For this case, we should have true.
    	//If we don't create an Area object, the method searches in the whole screen.
    	bool isText = screen.WaitForText(As.RegExp("Something"), 500);
    	Verify.IsTrue(isText, "Verify Screen Text Step 1", "Verify that the screen contains the text 'Something'.");

    	//Call WaitForText method with below parameters to find the text on the emulator screen.
    	//The method returns a bool to indicate if the text was found or not. For this case,  we should have true.
    	bool onscreen = screen.WaitForText(As.RegExp("Program/procedure"), new Area(8, 17, 8, 33), 500);
    	Verify.IsTrue(onscreen, "Verify Screen Text Step 1", "Verify that the screen in a certain screen area contains the text 'Program/procedure'.");

    	//Call WaitForText method with below parameters to find the text on the emulator screen.
    	//The method returns a bool to indicate if the text was found or not. For this case, we should have false.
    	bool notonscreen = screen.WaitForText("12352", new Area(8, 17, 8, 33), 500);
    	Verify.IsFalse(notonscreen, "Verify Screen Text Step 1", "Verify that the screen in a certain screen area does not contain the text '12352'.");
    }

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## Send a TE Key on the screen

This example demonstrates how to use terminal emulator objects and their respective properties to send a TE Key on the screen.

    [Test]
    public void TestSendTEKeys()
    {
    	// Following is the program flow:
    	// 1. Need to have a Terminal Emulator configured.
    	// 2. Identify a TeScreen test object based on some descriptive properties.
    	// 3. Call method SendKey() with a string as parameter example "Something" and a TE Key example Backspace.
    	// 4. Call WaitForText() method to verify if the inserted text exists.

    	//Identify IWindow and IScreen based on descriptive properties.
    	IScreen screen = Desktop.Describe<IWindow>(new WindowDescription
    	{

    		EmulatorStatus = HP.LFT.SDK.TE.EmulatorStatus.Ready,
    		Protocol = HP.LFT.SDK.TE.Protocol.Pr5250

    	}).Describe<IScreen>(new ScreenDescription
    	{
    		Label = @"screen10365"
    	});

    	//Call SendTEKeys method with a string and a TE Key
    	//The method sends to the emulator screen (at the cursor position) the string text + the TE Key.
    	screen.SendTEKeys("Something" + LFT.SDK.TE.Keys.BACKSPACE);

    	//Call WaitForText method with inserted text to find it on the emulator screen.
    	//The method returns a bool to indicate if the text was found or not. For this case, we should have true.
    	//If we don't create an Area object, the method searches in the whole screen.
    	bool isText = screen.WaitForText(As.RegExp("Something"), 500);
    	Verify.IsTrue(isText, "Verify Screen Text", "Verify that the screen contains the text 'Something'.");
    }

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