Question

ok i now it supose to be simple y have a multidimensional array, I try to fill my data table using the following code:

System.Data.DataTable _myDataTable =new System.Data.DataTable();    
for (int j=0; j < ele; j++)
{       
        _myDataTable.Columns.Add();   

        for (int i = 0; i < caract+1; i++)
        {
            row[i]=(datar[j,i].ToString());

        }
        _myDataTable.Rows.Add(row);

}

My array name is datar but the error I receive:

 System.IndexOutOfRangeException: cant find column 1.

What am I doing wrong? By the way: I am using C#, asp.net, NOT Visual Studio.

Answer 1

As pointed out by chiffre you actually have 3 problems: You will have to add all columns before you can start to add rows and you will have to create a DataRow before you can add it to your DataTable. Your third problem is your row-dimension counter caract+1 which will yield an IndexOutOfRange exception.

DataTable _myDataTable = new DataTable();

// create columns
for (int i = 0; i < ele; i++)
{
    _myDataTable.Columns.Add();
}

for (int j = 0; j < caract; j++)
{
    // create a DataRow using .NewRow()
    DataRow row = _myDataTable.NewRow();

    // iterate over all columns to fill the row
    for (int i = 0; i < ele; i++)
    {
        row[i] = datar[i, j];
    }

    // add the current row to the DataTable
    _myDataTable.Rows.Add(row);
}