Multiple-line text boxes in .NET
Multiple-line text boxes Draw Bar Code In .NET Using Barcode creator for ASP.NET Control to generate, create barcode image in ASP.NET applications. The third option for the TextMode property is the MultiLine enumeration, which enables you to create a memo-like text field for entering several lines of information all at once Give it a try: QR Code 2d Barcode Generation In Visual C# Using Barcode generation for .NET framework Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications. Part V: Creating Interactive Web Applications
Making QR Code JIS X 0510 In .NET Using Barcode maker for .NET framework Control to generate, create QR-Code image in Visual Studio .NET applications. <%@ Page Explicit= True Language= VB Debug= True %> <html> <body> <form runat= server > <asp:textbox id= Memo runat= server textmode= multiline /><br> </form> </body> </html> This page produces a two-line text box with a scroll bar along the right side Try typing some text When you get to the end of a line, the text box automatically wraps words down to the next line If you type more than two lines, it begins scrolling up Just as with the single-line text box, you can use the Columns property to set the width You also can use a Rows property to set the height Change the text box line in the preceding code to look like this: <asp:textbox id= Memo runat= server textmode= multiline columns= 40 rows= 10 /><br> This makes the multiline text box much bigger Create QR Code 2d Barcode In VB.NET Using Barcode creation for .NET Control to generate, create QR Code image in .NET framework applications. The TextBox s TextChanged event and AutoPostBack property
Making Bar Code In .NET Using Barcode maker for ASP.NET Control to generate, create barcode image in ASP.NET applications. In 10, I demonstrate a way to capture the button s click event so that you can write a subroutine that will react intelligently The text box also has an event that you can capture It s called TextChanged The TextChanged event happens when the user changes the text in the text box and then presses Tab or uses the mouse to click elsewhere Listing 12-1 demonstrates using the TextChanged event to automatically enable or disable other text boxes, as appropriate Print Bar Code In .NET Using Barcode generator for ASP.NET Control to generate, create bar code image in ASP.NET applications. Listing 12-1: Barcode Drawer In Java Using Barcode drawer for Java Control to generate, create bar code image in Java applications. Using TextChanged and AutoPostBack
UPC-A Drawer In Java Using Barcode generation for Java Control to generate, create UCC - 12 image in Java applications. <%@ Page Explicit= True Language= VB Debug= True %> <html> <script runat= server > Sub HaveCell_TextChanged(Sender As Object, E As EventArgs) If HaveCellText <> yes Then LabelCellPhoneEnabled = False CellPhoneEnabled = False CellPhoneToolTip = No Cell Phone Code 39 Extended Creation In VS .NET Using Barcode creation for VS .NET Control to generate, create Code 3 of 9 image in VS .NET applications. 12: Basic Server Controls: Labels, Text Boxes, and Buttons
Code39 Encoder In Visual Basic .NET Using Barcode printer for .NET framework Control to generate, create Code 3/9 image in Visual Studio .NET applications. Else LabelCellPhoneEnabled = True CellPhoneEnabled = True CellPhoneToolTip = Please enter your cell phone number End If End Sub </script> <body> <h1>Add Phonebook Entry</h1> <form runat= server > <asp:label id= LabelName text= Name runat= server /><br> <asp:textbox id= Name runat= server tooltip= Please enter your name tabindex= 10 /><br> <asp:label id= LabelHomePhone text= Home Phone runat= server /><br> <asp:textbox id= HomePhone runat= server tooltip= Please enter your home phone number tabindex= 20 /><br> <asp:label id= LabelHaveCell text= Do you have a cell phone runat= server /><br> <asp:textbox id= HaveCell runat= server tooltip= Do you have a cell phone Answer yes or no ontextchanged= HaveCell_TextChanged autopostback= true tabindex= 30 /><br> <asp:label id= LabelCellPhone text= Cell Phone runat= server /><br> <asp:textbox id= CellPhone runat= server tooltip= Please enter your cell phone number tabindex= 40 /><br> </form> </body> </html> When you try this page, it looks much like Figure 12-1 Before you type anything, allow your mouse pointer to hover over each of the text boxes You should see the text specified for ToolTip for each one These handy ToolTips give the user more information about what to enter than you ve provided on the page Next, begin entering a name and home phone for someone When you get to the question about a cellphone, type no and then press Tab or click in another text box The page returns to the server Because of the value specified in ontextchanged in the HaveCell text box, the server executes the Draw Data Matrix ECC200 In Visual Basic .NET Using Barcode generation for VS .NET Control to generate, create Data Matrix 2d barcode image in .NET applications. Part V: Creating Interactive Web Applications
Barcode Printer In Visual C#.NET Using Barcode creator for .NET framework Control to generate, create bar code image in VS .NET applications. HaveCell_TextChanged subroutine In doing so, it notices what you ve entered for the cellphone question and therefore disables the cellphone text box It even changes the cellphone text box s ToolTip Generate Bar Code In Java Using Barcode creator for Java Control to generate, create barcode image in Java applications. Figure 12-1: The Add Phonebook Entry page
UPC A Creator In Visual Basic .NET Using Barcode generator for Visual Studio .NET Control to generate, create UPCA image in VS .NET applications. If you try typing something else in the HaveCell text box, it goes back to the server each time you move the cursor away This happens because you set the AutoPostBack property of the HaveCell text box to true If you didn t set this property to true, the page would not return to the server when you move the cursor away and it wouldn t immediately trigger the TextChanged event So, whenever you want to capture the TextChanged event, you must set the AutoPostBack property to True; otherwise, the event on the server will not be executed right away This is true for text box events, drop-down list box events, and the events of many other controls The only control event that automatically goes back to the server when it s triggered (without having an autopostback property set to true) is the button control s Click event Of course, the only way to get the CellPhone text box enabled again is by typing yes in the HaveCell text box and then pressing the Tab key You might have noticed that the code in the subroutine disables both the text box and the label I do this so the label appears grayed out and offers a visual cue to the users, indicating that they can t use the associated text box Finally, I set the TabIndex property for each text box and numbered them by tens Why Simple That leaves room to add new controls in the middle, if necessary, in later updates to this form EAN13 Generation In Visual Studio .NET Using Barcode encoder for Visual Studio .NET Control to generate, create UPC - 13 image in .NET framework applications. Code 128B Encoder In Java Using Barcode creator for Java Control to generate, create Code 128 Code Set C image in Java applications. Barcode Maker In VS .NET Using Barcode maker for .NET Control to generate, create barcode image in Visual Studio .NET applications. UCC-128 Generation In Java Using Barcode drawer for Java Control to generate, create EAN / UCC - 14 image in Java applications. |
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