Question

I already have the code that specify columns of the dataTable but what I want is to create a general method that has in her parameters: ColumnName and types.
How can I do that?

This is my code:

column = dt.Columns.Add();
column.ColumnName = "IPPName";
column.DataType = typeof(String);

column = dt.Columns.Add();
column.ColumnName = "tagName";
column.DataType = typeof(String);

column = dt.Columns.Add();
column.ColumnName = "time";
column.DataType = typeof(String);

column = dt.Columns.Add();
column.ColumnName = "value";
column.DataType = typeof(Double);

column = dt.Columns.Add();
column.ColumnName = "qtity";
column.DataType = typeof(Double);

Answer 1

I dont know if I understand question correctly. Do you want to implement something like this ?

      public DataTable  CreateDataTable(Dictionary<string,Type> columns)
      {
            DataTable dt = new DataTable();
            foreach( var key in columns)
            {
                var column = dt.Columns.Add();
                column.ColumnName = key.Key;
                column.DataType = key.Value;
            }
            return dt;

        }


        public void CreateNewDataTable()
        {
            var columns = new Dictionary<string, Type>()
                {
                    {"column", typeof (string)}
                };
            var dt = CreateDataTable(columns);
        }