I have problems in displaying data on TDBGrid. I have connected the ADOconnection and link the data source to ADOtable. However there is no data displayed on the TDBGrid. Anyone knows why?

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I have problems in displaying data on TDBGrid. I have connected the ADOconnection and link the data source to ADOtable. However there is no data displayed on the TDBGrid. Anyone knows why?

Thank you.

Comments

  1. Ameera AkmaliaOctober 9, 2018 at 9:08 PM

    Richard Baroniunas yes i already did

    ReplyDelete
  2. shlomo abuisakOctober 9, 2018 at 10:53 PM

    ADOconnection active and DBGrid active should show the data AT DESIGN TIME !! unless you did not choose the right driver.
    what kind of Database is it ?
    Did you initialize connect string (at design time) ?
    Did you test (at design time) connection ? there is a button for that.

    ReplyDelete
  3. Paul TOTHOctober 9, 2018 at 11:29 PM

    it seems that all the fields are mapped to Blobs (or the database uses only blobs)

    ReplyDelete
  4. shlomo abuisakOctober 9, 2018 at 11:33 PM

    Paul TOTH never thought about it.You are right i guess.
    But pressing the test button on connect string will verify connection.

    ReplyDelete
  5. Dany MarmurOctober 10, 2018 at 2:49 AM

    The TDBGrid will show all fieldtypes that are ftMemo, ftBlob et. al like in your attached picture. Loong time since i used TDBGrid but i remember threr is something to be done. Google it! The screenshot definitely confirms that the connection is alive and active.

    ReplyDelete
  6. Dmitry ArefievOctober 11, 2018 at 3:00 AM

    That is changed some versions ago. Look at TBlobField.DisplayValue. It is by default dvClass. TBlobDisplayValue = (dvClass, dvFull, dvClip, dvFit)

    ReplyDelete

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