Collection -2D Array

2 D Array

You want to use a 2D array containing any type(int,string ,etc) of value in your C# program

2D array contain 2 pair of values

Performance  PERF

2D Array  are slower to index elements than 1D arrays. They are sometimes more memory

2D Array String

String[,] os=new string[,]{

{"dev","Svalue"},

{"devenvexe","JValue"}

};

2D Array Int:

int[,] os=new int[,]{  {1,2}, {3,4} };

Get the Upperbound to Loop:

        

 string[,] ad = new string[,]

       {

           {"dev", "devenvexe"},

           {"TCS", "Tata"},

           {"CTS", "Cogn"},

          

       };

            // Get the upper bound to loop.

            //Upper bound means specify the dimention (0 or 1)

            for (int i = 0; i <= ad.GetUpperBound(0); i++)

            {

                string FDim = ad[i, 0]; // JS, TCS, CTS...

                string SDim = ad[i, 1]; // J Suqare, Tata, Cogn...

                MessageBox.Show(FDim);

                MessageBox.Show(SDim);

            }

If you want use Length keyword .it will return 6 so

string[,] ad = new string[,]

       {

           {"dev", "devenvexe"},

           {"TCS", "Tata"},

           {"CTS", "Cogn"},

          

       };

            // Get the upper bound to loop.

            //Upper bound means specify the dimention (0 or 1)

            for (int i = 0; i <= ad.Length/2; i++)

            {

                string FDim = ad[i, 0]; // JS, TCS, CTS...

                string SDim = ad[i, 1]; // J Suqare, Tata, Cogn...

                MessageBox.Show(FDim);

                MessageBox.Show(SDim);

            }

GetUpperBound VS Length:

Its faster to use Array Length

Looping Speed:

GetUpperBound: 142 ms

Length/2     : 47 ms