Exporting 2d arrays into excel using Microsoft C++ Window Form Application

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Hi, Im learning on how to Extract a simple 2 dimensional arrays int values into the Excel file. i find many examples of doing that in c# however i was unable to convert it into a C++ format.

Below is the simple 2 dimensional array code i have wrote to test. if possible please guide me along the 2 dimensional array if i have made any mistake.

Thank you.

C#

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {

                unsigned int ptr = 0;

                 int** array_ptr;
                     array_ptr = new int * [1000];// Declare 1000 rows of arrays
                 for(int i = 0; i < 1000; i++)
                 {
                     array_ptr[i] = new int[1536]; // 1536 column
                 }

                 for(int y = 0; y <1000; y++)
                 {
                     for(int x = 0; x <1536; x++)
                     {
                         ptr++;
                         array_ptr[y][x] = (unsigned)(int) ptr;
                             //MessageBox::Show("ok");
                         textBox1->Text = Convert::ToString(array_ptr[800][264]);

                     }
                 }

             }

Posted 2-Jul-12 20:55pm

NypStu

Updated 2-Jul-12 22:06pm

Mohibur Rashid

v2

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enhzflep · Accepted Answer · 2012-07-02T21:15:00

Solution 1

Hi, answered a similar question a while ago. It involved automating Excel from C++, _without_ MFC. Perhaps it will be of use to you? Though I would suppose that using winforms, you can import Excel objects. (Don't know - never done winforms)

See the c++ solution here[^]

Posted 2-Jul-12 21:15pm

enhzflep

Comments

NypStu 4-Jul-12 1:41am

Hi enhzflep, thanks for your help , i just realised that i have declared 1536 columns X 1000 row of int. i think it would be impossible to export all the value into the excel file. however is it possible to export it into a notepad or any other software which will be able to keep and store such a large amount of int?
Thanks

enhzflep 4-Jul-12 5:32am

No problem NypStu. Just tried the code with an array of that size, it worked fine. I'll admit it took a couple of seconds for the call to put the array contents into the cells, but I suppose it was over 1.5 million elements.

You could certainly save the same information to a text file with ease. After opening the file, you'd just have a pair of for loops to print all the elements of the array.

There's code that interacts with excel that looks like t may be a good article for you, over here: Use VS2008 C/CLI to Automate Excel