ADO Type Property


Field Object Reference Complete Field Object Reference

The Type property sets or returns a DataTypeEnum value that indicates the type of a Parameter, Field, or a Property object.

Object Description of the Type Property
Parameter The Type property has read/write permissions on a Parameter object
Field

The Type property is read/write, with one exception; for new Field objects that are added to the Fields collection of a Record, this property is read-only before the Value property has been set and before the provider has called the Update method of the Fields collection

Property The Type property is read-only for a Property object

Syntax

objectname.Type

Example - For a Field object

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"

set rs = Server.CreateObject("ADODB.Recordset")
rs.open "Select * from orders", conn

response.write(rs.Fields(0).Type)

rs.Close
conn.close
%>

Example - For a Parameter object

<%
set comm=Server.CreateObject("ADODB.Command")
set para=Server.CreateObject("ADODB.Parameter")

para.Type=adVarChar
para.Size=25
para.Direction=adParamInput
para.Value=varfname

comm.Parameters.Append para
%>

Example - For a Property object

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"

set rs = Server.CreateObject("ADODB.Recordset")
rs.open "Select * from orders", conn

set prop=Server.CreateObject("ADODB.Property")

'Display the property attributes of the Orders Table
for each prop in rs.Properties
  response.write("Attr:" & prop.Attributes & "<br>")
  response.write("Name:" & prop.Name & "<br>")
  response.write("Value:" & prop.Value & "<br>")
next

rs.close
conn.close
set rs=nothing
set conn=nothing
%>

DataTypeEnum Values

Specifies the data type of a Field, Parameter, or Property object

Constant Value Description
adEmpty 0 No value
adSmallInt 2 A 2-byte signed integer.
adInteger 3 A 4-byte signed integer.
adSingle 4 A single-precision floating-point value.
adDouble 5 A double-precision floating-point value.
adCurrency 6 A currency value
adDate 7 The number of days since December 30, 1899 + the fraction of a day.
adBSTR 8 A null-terminated character string.
adIDispatch 9 A pointer to an IDispatch interface on a COM object. Note: Currently not supported by ADO.
adError 10 A 32-bit error code
adBoolean 11 A boolean value.
adVariant 12 An Automation Variant. Note: Currently not supported by ADO.
adIUnknown 13 A pointer to an IUnknown interface on a COM object. Note: Currently not supported by ADO.
adDecimal 14 An exact numeric value with a fixed precision and scale.
adTinyInt 16 A 1-byte signed integer.
adUnsignedTinyInt 17 A 1-byte unsigned integer.
adUnsignedSmallInt 18 A 2-byte unsigned integer.
adUnsignedInt 19 A 4-byte unsigned integer.
adBigInt 20 An 8-byte signed integer.
adUnsignedBigInt 21 An 8-byte unsigned integer.
adFileTime 64 The number of 100-nanosecond intervals since January 1,1601
adGUID 72 A globally unique identifier (GUID)
adBinary 128 A binary value.
adChar 129 A string value.
adWChar 130 A null-terminated Unicode character string.
adNumeric 131 An exact numeric value with a fixed precision and scale.
adUserDefined 132 A user-defined variable.
adDBDate 133 A date value (yyyymmdd).
adDBTime 134 A time value (hhmmss).
adDBTimeStamp 135 A date/time stamp (yyyymmddhhmmss plus a fraction in billionths).
adChapter 136 A 4-byte chapter value that identifies rows in a child rowset
adPropVariant 138 An Automation PROPVARIANT.
adVarNumeric 139 A numeric value (Parameter object only).
adVarChar 200 A string value (Parameter object only).
adLongVarChar 201 A long string value.
adVarWChar 202 A null-terminated Unicode character string.
adLongVarWChar 203 A long null-terminated Unicode string value.
adVarBinary 204 A binary value (Parameter object only).
adLongVarBinary 205 A long binary value.
AdArray 0x2000 A flag value combined with another data type constant. Indicates an array of that other data type.

Field Object Reference Complete Field Object Reference

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