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How to find if a field exists?

Discussion in 'Information Technology' started by Aaron G, Nov 18, 2005.

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  1. Aaron G

    Aaron G
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    Guest

    Using Access 2003,

    I'm trying to create a command button on a form (frmBase) that will open a
    popup form (frmPopup) with related data (linked relationship of "ID" and
    "ForeignID"). I can get this to work fine, HOWEVER, if there is no data (ie.
    the ForeignID does not exist) then I want to open the form in DataEntry =
    True mode. I know how to open a form in DataEntry mode, but I'm having
    difficulty with the IF/Then.

    So, what conditional code do I need to see if a record exists?

    TIA

    Aaron G
    Philadelphia, PA
     
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  3. Ofer

    Ofer
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    Guest

    Can you post what you have now?

    On the OnClick event I would put something like that
    If Isnull(DLookUp("FieldName","TableName","Enter here the criteria") Then
    ' New record open in add mode
    Docmd.OpenForm "FormName",,,,acFormAdd
    Else
    ' Existing recod, open in edit mode with criteria
    Docmd.OpenForm "FormName",,,WhereCondition,acFormEdit
    End if
    --
    I hope that helped
    Good Luck


    "Aaron G" wrote:

    > Using Access 2003,
    >
    > I'm trying to create a command button on a form (frmBase) that will open a
    > popup form (frmPopup) with related data (linked relationship of "ID" and
    > "ForeignID"). I can get this to work fine, HOWEVER, if there is no data (ie.
    > the ForeignID does not exist) then I want to open the form in DataEntry =
    > True mode. I know how to open a form in DataEntry mode, but I'm having
    > difficulty with the IF/Then.
    >
    > So, what conditional code do I need to see if a record exists?
    >
    > TIA
    >
    > Aaron G
    > Philadelphia, PA
     
  4. Aaron G

    Aaron G
    Expand Collapse
    Guest

    Ofer,

    That worked perfectly. I'm to embarrased to show you the mess I was trying
    to make. My blood sugar must be getting low.

    As always, thanks for your help.

    Aaron G
    Philadelphia, PA

    "Ofer" wrote:

    > Can you post what you have now?
    >
    > On the OnClick event I would put something like that
    > If Isnull(DLookUp("FieldName","TableName","Enter here the criteria") Then
    > ' New record open in add mode
    > Docmd.OpenForm "FormName",,,,acFormAdd
    > Else
    > ' Existing recod, open in edit mode with criteria
    > Docmd.OpenForm "FormName",,,WhereCondition,acFormEdit
    > End if
    > --
    > I hope that helped
    > Good Luck
    >
    >
    > "Aaron G" wrote:
    >
    > > Using Access 2003,
    > >
    > > I'm trying to create a command button on a form (frmBase) that will open a
    > > popup form (frmPopup) with related data (linked relationship of "ID" and
    > > "ForeignID"). I can get this to work fine, HOWEVER, if there is no data (ie.
    > > the ForeignID does not exist) then I want to open the form in DataEntry =
    > > True mode. I know how to open a form in DataEntry mode, but I'm having
    > > difficulty with the IF/Then.
    > >
    > > So, what conditional code do I need to see if a record exists?
    > >
    > > TIA
    > >
    > > Aaron G
    > > Philadelphia, PA
     
  5. Ofer

    Ofer
    Expand Collapse
    Guest

    Glad I could Help
    Good Luck


    "Aaron G" wrote:

    > Ofer,
    >
    > That worked perfectly. I'm to embarrased to show you the mess I was trying
    > to make. My blood sugar must be getting low.
    >
    > As always, thanks for your help.
    >
    > Aaron G
    > Philadelphia, PA
    >
    > "Ofer" wrote:
    >
    > > Can you post what you have now?
    > >
    > > On the OnClick event I would put something like that
    > > If Isnull(DLookUp("FieldName","TableName","Enter here the criteria") Then
    > > ' New record open in add mode
    > > Docmd.OpenForm "FormName",,,,acFormAdd
    > > Else
    > > ' Existing recod, open in edit mode with criteria
    > > Docmd.OpenForm "FormName",,,WhereCondition,acFormEdit
    > > End if
    > > --
    > > I hope that helped
    > > Good Luck
    > >
    > >
    > > "Aaron G" wrote:
    > >
    > > > Using Access 2003,
    > > >
    > > > I'm trying to create a command button on a form (frmBase) that will open a
    > > > popup form (frmPopup) with related data (linked relationship of "ID" and
    > > > "ForeignID"). I can get this to work fine, HOWEVER, if there is no data (ie.
    > > > the ForeignID does not exist) then I want to open the form in DataEntry =
    > > > True mode. I know how to open a form in DataEntry mode, but I'm having
    > > > difficulty with the IF/Then.
    > > >
    > > > So, what conditional code do I need to see if a record exists?
    > > >
    > > > TIA
    > > >
    > > > Aaron G
    > > > Philadelphia, PA
     

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