Gets the value of an item for the specified row and column. GetItem returns the value available in the data available to the client. This is equivalent to the primary buffer in other environments.
returnvalue dwcontrol.GetItem (number row, number column )
returnvalue dwcontrol.GetItem (number row, string column )
Returns the value in the specified row and column. The datatype of the returned data corresponds to the datatype of the column. Returns NULL if the column value is NULL. Returns the empty string ("") if an error occurs. If any argument value is NULL, the method returns NULL.
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