TextBox prohibit copy and paste and digit verification, decimal verification, Chinese Character verification, textbox decimal

TextBox prohibit copy and paste and digit verification, decimal verification, Chinese Character verification, textbox decimal

 

Verify Decimals

 

# Region verify decimals /// <summary> /// verify decimals /// </summary> /// <param name = "sender"> </param> /// <param name = "e"> </param> private void txtRoomArea_KeyDown_ForFloat (object sender, keyEventArgs e) {TextBox txt = sender as TextBox; // you can only enter a decimal number if (e. key> = Key. numPad0 & e. key <= Key. numPad9) | e. key = Key. subtract | e. key = Key. decimal) {if (txt. text. contains (". ") & e. key = Key. decimal) {e. hand Led = true; return;} e. handled = false;} else if (e. key> = Key. d0 & e. key <= Key. d9) | e. key = Key. oemPeriod | e. key = Key. subtract) & e. keyboardDevice. modifiers! = ModifierKeys. shift) {if (txt. text. contains (". ") & e. key = Key. oemPeriod) {e. handled = true; return;} e. handled = false;} else {e. handled = true ;}# endregionVerify Decimals

 

TextBox Content Change Detection

 

# Region TextBox_TextChanged private void TextBox_TextChanged (object sender, TextChangedEventArgs e) {// mask Chinese Input and paste input TextBox = sender as textBox; TextChange [] change = new TextChange [e. changes. count]; e. changes. copyTo (change, 0); int offset = change [0]. offset; if (change [0]. addedLength> 0) {double num = 0; if (! Double. TryParse (textBox. Text, out num )&&! TextBox. text. equals ("-") {textBox. text = textBox. text. remove (offset, change [0]. addedLength); textBox. select (offset, 0) ;}/// NoteFieldConfigModel noteField = NoteFieldConfigs. first (t => t. ffieldName = textBox. name); // string value = string. isNullOrEmpty (textBox. text) = true? Null: textBox. text; // if (string. isNullOrEmpty (value) // {// return; //} // if (noteField. ffieldType = 3) // {// textBox. text = string. format ("{0: N2}", Convert. toDouble (value. trimStart (','); //} // if (noteField. ffieldType = 2 & (noteField. fimptClassID = null | noteField. fimptClassID = 0) // {// textBox. text = string. format ("{0: N0}", Convert. toDouble (value. trimStart (','); //} # endregionEvents when content changes