June 2001
Intermediate to advanced
620 pages
19h 29m
English
Content preview from ADO: ActiveX Data Objects
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Field Specifics
The Field object, as stated earlier, contains all of the information that corresponds to a single column of data within the recordset. The most important type of field characteristic is the field’s datatype.
Field Datatypes
The datatype of a field specifies the type of information stored in the field within the recordset. There are many different datatypes available from many different data sources. ADO contains a list of datatypes that encompasses the majority of the datatypes known to developers. This list is shown in Table 6-1. These values are constants that represent the different datatype values that the Type property of the Field object can be set to.
Table 6-1. The DataTypeEnum Enumeration
|
Value |
Description |
|---|---|
adArray |
Indicates that the datatype of the Field object is a safe array of another type that is joined to the adArray value by a logical Or. |
adBigInt |
Indicates that the datatype of the Field object is an 8-byte signed integer value. |
adBinary |
Indicates that the datatype of the Field object is a binary value. |
adBoolean |
Indicates that the datatype of the Field object is a Boolean value. |
adByRef |
Indicates that the datatype of the Field object is a pointer to another type which is joined to the adByRef value by a logical Or. |
adBSTR |
Indicates that the datatype of the Field object is a null-terminated character-string value. |
adChar |
Indicates that the datatype of the Field object is a String value. |
adCurrency |
Indicates that the datatype of the ... |
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