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I have System.Windows.Input.KeyEventArgs e variable. I want to get real char. For example, i press } button on keyboard. And normally it returns string like oem.. but i want to get } char. How to do ?
[EDIT] I use this in TextBox .
830
See this post... how to capture the '#' character on different locale keyboards in WPF/C#?
it has a utility function called GetCharFromKey(Key key) which gets locale specific character from the Key of the Keyboard event args.
Very useful.
69
Sometimes you just need to solved the problem with a sledgehammer.
char KeyToChar(Key key) {
if (Keyboard.IsKeyDown(Key.LeftAlt) ||
Keyboard.IsKeyDown(Key.RightAlt) ||
Keyboard.IsKeyDown(Key.LeftCtrl) ||
Keyboard.IsKeyDown(Key.RightAlt))
{
return '\x00';
}
bool caplock = Console.CapsLock;
bool shift = Keyboard.IsKeyDown(Key.LeftShift) ||
Keyboard.IsKeyDown(Key.RightShift);
bool iscap = (caplock && !shift) || (!caplock && shift);
switch(key) {
case Key.Enter: return '\n';
case Key.A: return (iscap ? 'A' : 'a');
case Key.B: return (iscap ? 'B' : 'b');
case Key.C: return (iscap ? 'C' : 'c');
case Key.D: return (iscap ? 'D' : 'd');
case Key.E: return (iscap ? 'E' : 'e');
case Key.F: return (iscap ? 'F' : 'f');
case Key.G: return (iscap ? 'G' : 'g');
case Key.H: return (iscap ? 'H' : 'h');
case Key.I: return (iscap ? 'I' : 'i');
case Key.J: return (iscap ? 'J' : 'j');
case Key.K: return (iscap ? 'K' : 'k');
case Key.L: return (iscap ? 'L' : 'l');
case Key.M: return (iscap ? 'M' : 'm');
case Key.N: return (iscap ? 'N' : 'n');
case Key.O: return (iscap ? 'O' : 'o');
case Key.P: return (iscap ? 'P' : 'p');
case Key.Q: return (iscap ? 'Q' : 'q');
case Key.R: return (iscap ? 'R' : 'r');
case Key.S: return (iscap ? 'S' : 's');
case Key.T: return (iscap ? 'T' : 't');
case Key.U: return (iscap ? 'U' : 'u');
case Key.V: return (iscap ? 'V' : 'v');
case Key.W: return (iscap ? 'W' : 'w');
case Key.X: return (iscap ? 'X' : 'x');
case Key.Y: return (iscap ? 'Y' : 'y');
case Key.Z: return (iscap ? 'Z' : 'z');
case Key.D0: return (shift ? ')' : '0');
case Key.D1: return (shift ? '!' : '1');
case Key.D2: return (shift ? '@' : '2');
case Key.D3: return (shift ? '#' : '3');
case Key.D4: return (shift ? '$' : '4');
case Key.D5: return (shift ? '%' : '5');
case Key.D6: return (shift ? '^' : '6');
case Key.D7: return (shift ? '&' : '7');
case Key.D8: return (shift ? '*' : '8');
case Key.D9: return (shift ? '(' : '9');
case Key.OemPlus: return (shift ? '+' : '=');
case Key.OemMinus: return (shift ? '_' : '-');
case Key.OemQuestion: return (shift ? '?' : '/');
case Key.OemComma: return (shift ? '<' : ',');
case Key.OemPeriod: return (shift ? '>' : '.');
case Key.OemOpenBrackets: return (shift ? '{' : '[');
case Key.OemQuotes: return (shift ? '"' : '\'');
case Key.Oem1: return (shift ? ':' : ';');
case Key.Oem3: return (shift ? '~' : '`');
case Key.Oem5: return (shift ? '|' : '\\');
case Key.Oem6: return (shift ? '}' : ']');
case Key.Tab: return '\t';
case Key.Space: return ' ';
// Number Pad
case Key.NumPad0: return '0';
case Key.NumPad1: return '1';
case Key.NumPad2: return '2';
case Key.NumPad3: return '3';
case Key.NumPad4: return '4';
case Key.NumPad5: return '5';
case Key.NumPad6: return '6';
case Key.NumPad7: return '7';
case Key.NumPad8: return '8';
case Key.NumPad9: return '9';
case Key.Subtract: return '-';
case Key.Add: return '+';
case Key.Decimal: return '.';
case Key.Divide: return '/';
case Key.Multiply: return '*';
default: return '\x00';
}
}
Here's a more powerful version of the above code:
public struct IoCmd_t {
public Key key;
public bool printable;
public char character;
public bool shift;
public bool ctrl;
public bool alt;
public int type; //sideband
public string s; //sideband
};
public void KeyToChar(Key key, ref IoCmd_t KeyDecode) {
bool iscap;
bool caplock;
bool shift;
KeyDecode.key = key;
KeyDecode.alt = Keyboard.IsKeyDown(Key.LeftAlt) ||
Keyboard.IsKeyDown(Key.RightAlt);
KeyDecode.ctrl = Keyboard.IsKeyDown(Key.LeftCtrl) ||
Keyboard.IsKeyDown(Key.RightCtrl);
KeyDecode.shift = Keyboard.IsKeyDown(Key.LeftShift) ||
Keyboard.IsKeyDown(Key.RightShift);
if (KeyDecode.alt || KeyDecode.ctrl) {
KeyDecode.printable = false;
KeyDecode.type = 1;
}
else {
KeyDecode.printable = true;
KeyDecode.type = 0;
}
shift = KeyDecode.shift;
caplock = Console.CapsLock; //Keyboard.IsKeyToggled(Key.CapsLock);
iscap = (caplock && !shift) || (!caplock && shift);
switch(key) {
case Key.Enter: KeyDecode.character = '\n'; return;
case Key.A: KeyDecode.character = (iscap ? 'A' : 'a'); return;
case Key.B: KeyDecode.character = (iscap ? 'B' : 'b'); return;
case Key.C: KeyDecode.character = (iscap ? 'C' : 'c'); return;
case Key.D: KeyDecode.character = (iscap ? 'D' : 'd'); return;
case Key.E: KeyDecode.character = (iscap ? 'E' : 'e'); return;
case Key.F: KeyDecode.character = (iscap ? 'F' : 'f'); return;
case Key.G: KeyDecode.character = (iscap ? 'G' : 'g'); return;
case Key.H: KeyDecode.character = (iscap ? 'H' : 'h'); return;
case Key.I: KeyDecode.character = (iscap ? 'I' : 'i'); return;
case Key.J: KeyDecode.character = (iscap ? 'J' : 'j'); return;
case Key.K: KeyDecode.character = (iscap ? 'K' : 'k'); return;
case Key.L: KeyDecode.character = (iscap ? 'L' : 'l'); return;
case Key.M: KeyDecode.character = (iscap ? 'M' : 'm'); return;
case Key.N: KeyDecode.character = (iscap ? 'N' : 'n'); return;
case Key.O: KeyDecode.character = (iscap ? 'O' : 'o'); return;
case Key.P: KeyDecode.character = (iscap ? 'P' : 'p'); return;
case Key.Q: KeyDecode.character = (iscap ? 'Q' : 'q'); return;
case Key.R: KeyDecode.character = (iscap ? 'R' : 'r'); return;
case Key.S: KeyDecode.character = (iscap ? 'S' : 's'); return;
case Key.T: KeyDecode.character = (iscap ? 'T' : 't'); return;
case Key.U: KeyDecode.character = (iscap ? 'U' : 'u'); return;
case Key.V: KeyDecode.character = (iscap ? 'V' : 'v'); return;
case Key.W: KeyDecode.character = (iscap ? 'W' : 'w'); return;
case Key.X: KeyDecode.character = (iscap ? 'X' : 'x'); return;
case Key.Y: KeyDecode.character = (iscap ? 'Y' : 'y'); return;
case Key.Z: KeyDecode.character = (iscap ? 'Z' : 'z'); return;
case Key.D0: KeyDecode.character = (shift ? ')' : '0'); return;
case Key.D1: KeyDecode.character = (shift ? '!' : '1'); return;
case Key.D2: KeyDecode.character = (shift ? '@' : '2'); return;
case Key.D3: KeyDecode.character = (shift ? '#' : '3'); return;
case Key.D4: KeyDecode.character = (shift ? '$' : '4'); return;
case Key.D5: KeyDecode.character = (shift ? '%' : '5'); return;
case Key.D6: KeyDecode.character = (shift ? '^' : '6'); return;
case Key.D7: KeyDecode.character = (shift ? '&' : '7'); return;
case Key.D8: KeyDecode.character = (shift ? '*' : '8'); return;
case Key.D9: KeyDecode.character = (shift ? '(' : '9'); return;
case Key.OemPlus: KeyDecode.character = (shift ? '+' : '='); return;
case Key.OemMinus: KeyDecode.character = (shift ? '_' : '-'); return;
case Key.OemQuestion: KeyDecode.character = (shift ? '?' : '/'); return;
case Key.OemComma: KeyDecode.character = (shift ? '<' : ','); return;
case Key.OemPeriod: KeyDecode.character = (shift ? '>' : '.'); return;
case Key.OemOpenBrackets: KeyDecode.character = (shift ? '{' : '['); return;
case Key.OemQuotes: KeyDecode.character = (shift ? '"' : '\''); return;
case Key.Oem1: KeyDecode.character = (shift ? ':' : ';'); return;
case Key.Oem3: KeyDecode.character = (shift ? '~' : '`'); return;
case Key.Oem5: KeyDecode.character = (shift ? '|' : '\\'); return;
case Key.Oem6: KeyDecode.character = (shift ? '}' : ']'); return;
case Key.Tab: KeyDecode.character = '\t'; return;
case Key.Space: KeyDecode.character = ' '; return;
// Number Pad
case Key.NumPad0: KeyDecode.character = '0'; return;
case Key.NumPad1: KeyDecode.character = '1'; return;
case Key.NumPad2: KeyDecode.character = '2'; return;
case Key.NumPad3: KeyDecode.character = '3'; return;
case Key.NumPad4: KeyDecode.character = '4'; return;
case Key.NumPad5: KeyDecode.character = '5'; return;
case Key.NumPad6: KeyDecode.character = '6'; return;
case Key.NumPad7: KeyDecode.character = '7'; return;
case Key.NumPad8: KeyDecode.character = '8'; return;
case Key.NumPad9: KeyDecode.character = '9'; return;
case Key.Subtract: KeyDecode.character = '-'; return;
case Key.Add: KeyDecode.character = '+'; return;
case Key.Decimal: KeyDecode.character = '.'; return;
case Key.Divide: KeyDecode.character = '/'; return;
case Key.Multiply: KeyDecode.character = '*'; return;
default:
KeyDecode.type = 1;
KeyDecode.printable = false;
KeyDecode.character = '\x00';
return;
} //switch
} // function
You have e.Key property you can use for just that. Here's a link to msdn.
Edit:
I didn't realize you need the actual char. You can take a look here They say that in WPF you can do it using some Win32 APIs, while in Silverlight it seems rather difficult. Also you can look at KeyInterop.VirtualKeyFromKey - you can convert the WPF Key enum into a WinForms Keys enumeration, which does give you some more information. I haven't tried any of the solutions, so I don't know if any of them will work.
And one last thing. Why do you need the char from the KeyDown/Up event? Are you sure you can't use the TextChanged event instead? It will be much easier to get the exact char, if you can.
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