RAD Studio VCL Reference
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TCustomDataSetAdapterField.GetPrevValue Method
TCustomDataSetAdapterField Class | TCustomDataSetAdapterField Members | DBAdapt Namespace | Description | See Also
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Returns the value of this field, as it should appear in a hidden field in an HTML form.

Pascal
function GetPrevValue: Variant;
C++
__fastcall Variant GetPrevValue();
Description

When the GetNeedPrevValue method returns true, GetPrevValue returns the value for this field that should appear as a hidden field in an HTML form. This hidden value is included in request messages that originate from that form. Thus, GetPrevValue returns a value that this field sends to itself, which is transparent to the end-user. 

GetPrevValue delegates the task of providing the hidden value to the ImplGetPrevValue method. 

 

See Also
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