Solved

How to sort and compare data from a SQL and an Access database

Posted on 2009-04-07
1
277 Views
Last Modified: 2013-12-17
I have a datagridview in my C#.net application that pulls data from a SQL database (id,name,details). I have functionality in my program that flags a record when I click on a row. When a row is flagged it stores the ID of the flagged row in my Access database. I need to be able to sort the grid listing those IDs that are stored in my access database by clicking on a button . The problem is I am working with data from a sql and access database. I need a mechanism that compares the ID in the access database with the data pulled from the sql database and list the records of the IDs that are stored in the Access database first. So the data is coming from the sql server but the IDs that are in the database are listed first
0
Comment
Question by:wademi
1 Comment
 
LVL 15

Accepted Solution

by:
oobayly earned 500 total points
ID: 24089021
You could use the merge method on the underlying datatables.
Assuming you retireve data from both SQL server & Access into two datatables, add a PK to each table, and then merge the Access table into the SQL Server table.

When you flag a record, again merge the Access table into the SQL Server table so that it's up to date.
    Random rand = new Random(1);
 

    DataTable sqlTable = new DataTable();

    sqlTable.Columns.Add("ID", typeof(int));

    sqlTable.Columns.Add("Date", typeof(DateTime));

    sqlTable.PrimaryKey = new DataColumn[]{sqlTable.Columns["ID"]};
 

    DataTable accessTable = new DataTable();

    accessTable.Columns.Add("ID", typeof(int));

    accessTable.Columns.Add("Flag", typeof(bool));

    accessTable.PrimaryKey = new DataColumn[] { accessTable.Columns["ID"] };
 

    for (int i = 0; i < 10; i++) {

      sqlTable.Rows.Add(i, DateTime.Now.AddMilliseconds(rand.Next(int.MinValue, int.MaxValue)));

    }

    sqlTable.AcceptChanges();
 

    for (int i = 0; i < 10; i++) {

      accessTable.Rows.Add(i, rand.Next(0, 2) == 0);

    }

    accessTable.AcceptChanges();
 

    sqlTable.Merge(accessTable);

Open in new window

0

Featured Post

Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

Join & Write a Comment

This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
For a while now I'v been searching for a circular progress control, much like the one you get when first starting your Silverlight application. I found a couple that were written in WPF and there were a few written in Silverlight, but all appeared o…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

708 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now