C Sharp
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Csharp Quick Reference Example using System; class Test { static void int x = 3; int y = x; x++; Console.WriteLine (y); } } For For (int=1, i<=10; i++) Console.WriteLine(“The number is {0}”,i ); While While (x<100) X++; If…Then If (nCount < nMax) { nTotal += nCount; nCount++; } Else { nTotal += nCount; nCount-; } Array Int[] nums = new int[2]; nums[0] = 100; nums[1] = 200; char[ ] vowels = new char[ ] {'a','e','i','o','u'}; Console.WriteLine(vowels [1]); int[,] array = {{1,2},{3,4}}; Struct struct Point { public int x, y; } Point p1 = new Point( ); Point p2; p2.x = p2.y = 0; Point[] points = new Point[3]; Function Method public void Remove(int index) { if (index > Count - 1 || index < 0) { System.Windows.Forms.MessageBox.Show("Index not valid!"); } else { List.RemoveAt(index); } } Class Public class Widget { public string Name; public Widget() { } } Throw Exceptions public void Accelerate(int finalVelocity) { if (finalVelocity > cnstSpeedOfLight) { throw new SpeedOfLightException("You cannot exceed light speed!"); } // Additional code omitted. } Catch Exceptions int cmdresults = 0; // The following two property settings can also me done // in the Properties window, but are shown here for completeness. OleDbCommand2.CommandText = "NewAuthor"; OleDbCommand2.CommandType = CommandType.StoredProcedure; // Set parameter values. In this case, all parameter values // are strings. OleDbCommand2.Parameters["au_id"].Value = TextBox1.Text; OleDbCommand2.Parameters["au_lname"].Value = TextBox2.Text; OleDbCommand2.Parameters["au_fname"].Value = TextBox3.Text; OleDbCommand2.Parameters["phone"].Value = TextBox4.Text; OleDbCommand2.Parameters["address"].Value = TextBox5.Text; OleDbCommand2.Parameters["city"].Value = TextBox6.Text; OleDbCommand2.Parameters["st"].Value = TextBox7.Text; OleDbCommand2.Parameters["zip"].Value = TextBox8.Text; OleDbCommand2.Parameters["contract"].Value = CheckBox1.Checked; OleDbConnection2.Open(); try { cmdresults = OleDbCommand2.ExecuteNonQuery(); } catch (Exception ex) { MessageBox.Show("Failed to execute command, err = " + ex.Message); } OleDbConnection2.Close(); MessageBox.Show("Number of records inserted = " + cmdresults.ToString()); Database ADO.net => System.Data SqlConnection cnPubs = New SqlConnection (“Server =(Local);uid=sa;pwd=;database=pubs”); SqlDataAdapter daTitle=new SqlDataAdapter(“select title,notes,price,pubdate from titles”,cnPubs) |
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