C#
DateTimePicker – reset focus
Mar 5th
Code Snippet – VB.NET Private Sub DateTimePicker1_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.Enter Dim fmt As DateTimePickerFormat = DateTimePicker1.Format DateTimePicker1.Format = DateTimePickerFormat.Long DateTimePicker1.Format = DateTimePickerFormat.Custom DateTimePicker1.Format = fmt End Sub Code Snippet – C# private void dateTimePicker1_Enter(object sender, EventArgs e) { DateTimePickerFormat fmt = dateTimePicker1.Format; dateTimePicker1.Format = DateTimePickerFormat.Long; dateTimePicker1.Format [...]
Inherit DataGridView in Windows Forms
Sep 4th
Code Snippet using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace DataGridViewInheritance { [Designer(typeof(System.Windows.Forms.Design.ControlDesigner))] public partial class DataGridViewEx : DataGridView { public DataGridViewEx() { InitializeComponent(); } } }
Decimal to Byte array (vice versa)
Feb 26th
1: public static byte[] DecimalToBytes(Decimal dec) 2: { 3: using (MemoryStream stream = new MemoryStream()) 4: { 5: using (BinaryWriter writer = new BinaryWriter(stream)) 6: { 7: writer.Write(dec); 8: return stream.ToArray(); 9: } 10: } 11: } 1: public static Decimal BytesToDecimal(byte[] src) 2: { 3: if (src.Length == 1) 4: { 5: return Decimal.Parse(((char)src[0]).ToString()); [...]
Byte array to String (vice versa)
Feb 26th
1: public static string BytesToString(byte[] bytes) 2: { 3: ASCIIEncoding enc = new System.Text.ASCIIEncoding(); 4: return enc.GetString(bytes); 5: } 1: public static byte[] StringToBytes(string str) 2: { 3: ASCIIEncoding enc = new System.Text.ASCIIEncoding(); 4: return enc.GetBytes(str); 5: }
Byte array to Integer (vice versa)
Feb 26th
1: public static int BytesToInt(byte[] bytes) 2: { 3: return int.Parse(BytesToString(bytes).Trim()); 4: } 5: 6: public static string BytesToString(byte[] bytes) 7: { 8: ASCIIEncoding enc = new System.Text.ASCIIEncoding(); 9: return enc.GetString(bytes); 10: } 1: public static byte[] IntToBytes(int value) 2: { 3: ASCIIEncoding enc = new System.Text.ASCIIEncoding(); 4: return enc.GetBytes(value.ToString()); 5: } Code Snippet /// [...]
Hexadecimal to Integer (vice versa)
Feb 26th
1: public static int HexToInteger(string HexString) 2: { 3: return int.Parse(HexString, System.Globalization.NumberStyles.HexNumber); 4: } 1: public static string IntegerToHex(int IntValue) 2: { 3: return IntValue.ToString("X"); 4: }
Hexadecimal string to Bytes array
Feb 26th
1: public static byte[] HexToBytes(String hexString) 2: { 3: byte [] byteArray = null; 4: int byteCount = 0; 5: if (hexString != null && hexString.Length > 0) 6: { 7: if (hexString.Length % 2 != 0) //make sure we have an even number of characters 8: hexString = "0" + hexString; 9: byteCount = [...]
Bytes array to Hexadecimal string
Feb 26th
1: public static string BytesToHex(byte[] bytes) 2: { 3: string hex = BitConverter.ToString(bytes); 4: return hex.Replace("-",""); 5: } 1: public static string BytesToHex(byte[] bytes) 2: { 3: StringBuilder hexString = new StringBuilder(bytes.Length); 4: for (int i = 0; i < bytes.Length; i++) 5: { 6: hexString.Append(bytes[i].ToString("X2")); 7: } 8: return hexString.ToString(); 9: }
Auto Complete ComboBox – C# Windows Forms
Feb 24th
Download source files – 8.50 Kb Download demo project – 11.0 Kb Introduction This is a simple code snippet which is used to make an Auto Complete ComboBox. Using the code Usage: Call the function AutoComplete from within the ComboBox’s KeyPress event handler. 1: AutoComplete(ComboBox cb, System.Windows.Forms.KeyPressEventArgs e, bool blnLimitToList) 1: // AutoComplete 2: [...]
DataGrid Paging using DataReader – C# Windows Forms
Feb 24th
Download source files – 21.5 Kb Download demo project – 8.0 Kb Introduction This is an example of Windows Forms DataGrid paging using c#. I have used Microsoft SQL Server 2000 database. Using the code Create a table: 1: CREATE TABLE tblEmp (E_ID int PRIMARY KEY, E_Name varchar(60), E_Salary money, E_DOJ datetime) 2: GO [...]
