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Sorting within a database grid

Posted on 1997-09-17
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Last Modified: 2010-04-04
I want to be able to have the data listed in a dbGrid be sorted by one (or two) of the fields. The dbGrid's datasource comes from a table which has a master datasource.

I tried specifying the field name I wanted to sort by in the "IndexFieldNames" property, but had a "Index out of range" error.
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Question by:BadBart
6 Comments
 
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Expert Comment

by:ronit051397
ID: 1345398
Did you try SQL?
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Author Comment

by:BadBart
ID: 1345399
The supervisor of the project does not regard SQL very highly as it takes a much longer time to process.

So, I'm only to use things such as Findkey() and FieldByName().
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LVL 1

Expert Comment

by:anilms
ID: 1345400
Could you be more specific in telling us what type of database table you have (dbf or paradox) and what are the indexes you have created for the table. This would be more useful in getting a proper solution for your needs.
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LVL 8

Expert Comment

by:ZifNab
ID: 1345401
I know this is a stupid question, but i'm going to ask it anyway :

When using IndexFieldNames you have to define as index field names in your table structure. Have you done this. Primary and secondary indexes???

Have fun,
c.u. ZifNab;

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Accepted Solution

by:
jturpin earned 50 total points
ID: 1345402
Try using
   try
      .
      .
      .
   SomeName : String;
   YourTable.Close;
   YourTable.AddIndex(SomeName,'Field1;Field2',
      [ixExpression,ixDescending]);
   YourTable.IndexName:= SomeName;
   YourTable.Open;
      .
      ---Processing ---
      .
      .
   finally
      YourTable.Close;
      YourTable.DeleteIndex(SomeName);
      YourTable.IndexName:= '';
      YourTable.IndexDefs.Update;
   end;
0
 

Author Comment

by:BadBart
ID: 1345403
Sorry for the delay! Thanks heaps..!
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