textbox

问题 On some occasions, when focus is set to a particular textbox, the cursor parks itself before the text like this: Yet, the TextBox has a GotFocus handler that explicitly selects all the text: private void txtQty_GotFocus(object sender, EventArgs e) { try { if (deviceInfo.isKeyboardShown()) { SipShowIM(SIPF_OFF); } txtQty.SelectAll(); txtQty.BackColor = Color.Yellow; } catch (Exception ex) { NRBQ.ExceptionHandler(ex, "frmEntry.txtQty.GotFocus"); } } Also, the BackColor is not set to yellow. But

问题 I have TextBox controls and associated Timers that restarts on each KeyDown or MouseClick event, and performs queries based on typed text after 3 seconds without those events. So far so good. But some of my TextBoxes also have AutoComplete lists which user can browse in, but even if they do using keyboard arrow keys, timer is not halted and an unexpected query is fired in the middle of user browsing the list. Question: is there a way of detecting when autocomplete list is showing, so that I

问题 I have a persistent problem with textboxes in WPF, using .NET 3.5. With a large (5000+ lines) amount of data in a TextBox with wrapping enabled, the window has ridiculously bad performance while being resized. This only happens with TextWrapping="Wrap". Having the text data bound or just setting it programmatically makes no difference. The code is literally as simple as this: <TextBox Margin="12,39,337,29" Text="{Binding Output, Mode=OneWay}" TextWrapping="Wrap" VerticalScrollBarVisibility=

问题 I don't know what this is called, but I'm sure theres a name for this and it has been done multiple times. I have some textboxes that ideally would only allow specific input, like a box for phone number, bank account numbers and stuff like that. For instance, a phone number input should be in the following format: 000-000-0000 but I'd also like it to accept a number without an area code like : 000-0000 Now I have made a control derived from textbox that accepts only numeric input, but I have

问题 I'm building a Facebook app that calls a Facebook dialog box to allow users to share a post. Using the facebook documentation, a call to the facebook object: [appDelegate.facebook dialog:@"feed" andDelegate:self]; opens the dialog box I need. However, the keyboard for user input doesn't popup, and all I can do is post a blank post up on my wall. Has anyone else encountered this? 回答1: Did you ever figure out how to resolve this issue? I'm seeing the same thing. I'm using the three20 framework

问题 I create A shape for Text View Background <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <gradient android:startColor="#800e1520" android:endColor="#801e252f" android:angle="45"/> <padding android:left="7dp" android:top="7dp" android:right="7dp" android:bottom="7dp" /> <corners android:radius="8dp" /> and my textview is : <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout

问题 My first thought was it would be something like this: int height = textbox.lines.length * lineheight; But it just counts "\xd\n" and lines can be wrapped. Can i get the number of displayed lines or actual height of textbox when everything is visible(the height of text inside)? 回答1: I don't know if you will ever get a perfect measurement, but this gets close: private int GetTextHeight(TextBox tBox) { return TextRenderer.MeasureText(tBox.Text, tBox.Font, tBox.ClientSize, TextFormatFlags

问题 What I have is a Windows form, in C#, with 7 text boxes. Each text box updates 2 or 3 others when its value is changed and accepted. What I want to do is somehow take those text boxes that need to be updated and make them "flash" with a light back color or something. The purpose is to show the user what is being updated with an added bit of flair. I'm not sure if there is an easy way to do this and that is why I'm asking here. I can use a timer, a while loop, and a back color with a

问题 What I have is a Windows form, in C#, with 7 text boxes. Each text box updates 2 or 3 others when its value is changed and accepted. What I want to do is somehow take those text boxes that need to be updated and make them "flash" with a light back color or something. The purpose is to show the user what is being updated with an added bit of flair. I'm not sure if there is an easy way to do this and that is why I'm asking here. I can use a timer, a while loop, and a back color with a

问题 A TextBox is set to AutoPostback as changing the value should cause a number of (display-only) fields to be recalculated and displayed. That works fine. However, when the field is tabbed out of, the focus briefly moves on to the next field, then disappears when the page is redrawn so there is no focus anywhere. I want the focus to be on the new field, not the textbox I've just changed. Is there a way to work out which field had the focus and force it to have it again when the page is redrawn?