InsertCol - method of the PmaDataTable object
The method inserts one new column on the specified position. Existing columns after this position are moved. All rows of the table are removed !
Long InsertCol(Long Col, String Name, Long Dt)
|Col||(Long) If the value of this parameter is the number >=0, then it is the column index (zero-based index) where the new column has to be inserted. |
The value -2 means that new column has to be inserted at the end of the table.
|Name||(String) Name of the new column. Already existing columns in this table mustn't have this name.|
|Dt||(Long) Data type of the column. See VBScript constants of data types.|
Returns the index of the inserted column. It returns the negative number if an error occurred (the column has not been inserted). Then the error is written into the INFO system
Maximum number of columns depends on PROMOTIC Runtime licence
and is: PmRtProf
: 65535, PmRtFree
: 30 and PmRtXX
: XX (for example PmRt100
: 100). Caution!
New column can be inserted after the column with data type Identifier
(if present). "Read only" columns:
If at least one cell is locked in "Read only" column by writing non-empty value, then the whole structure of the table is locked. Then it is no longer possible to add or remove rows or columns or change the structure of the table. The structure and dimensions of the table must be defined and modified before writing first non-empty value into a cell in "Read only" column.
In the /DataTable
object (of the PmaDataTable
type) one new column is inserted at the end
of the table. The column has the name "abc"
var oDataTable = pMe.Pm("/DataTable");
oDataTable.InsertCol(-2, "abc", 3); //3=Long