Saving problem in C# and tables

Question

0.00/5 (No votes)

See more:

I have two tables in Access, table1 with Primary key and table2 with foreign key.
I Created a WIn form in C#. Drag both tables into forms with details. table2 as a it appears at the bottom of table1. Using BindingNavigator i created a new empty form. Enter data and try to save the data into table 1 & 2. It Saves in table1 BUT not in table2. In fact when I click save button, it erases the content of all controls related to table2

Posted 31-May-12 3:49am

Member 9054838

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dave Kreskowiak · Answer 1 · 2012-05-31T03:55:00

Solution 1

The drag and drop contorl won't do this for you.

You have to add the code to save the data to table2 yourself. You'd write the data to table1, get the primary key value of the newly added record, then write the data to table2, using the key value from table1 as the foreign key.

You can find an example of doing that here[^].

Posted 31-May-12 3:55am

Dave Kreskowiak

Comments

Member 9054838 31-May-12 11:21am

Many thanks. i already saw the example and here is my code: It doesn't save. here is my code:
private void table1BindingNavigatorSaveItem_Click(object sender, EventArgs e)
{
this.Validate();
this.table1BindingSource.EndEdit();
this.table2BindingSource.EndEdit();

dbaccess1DataSet.table2DataTable modifiedtable2 = (dbaccess1DataSet.table2DataTable)
dbaccess1DataSet.table2.GetChanges(DataRowState.Modified);
dbaccess1DataSet.table2DataTable deletedtable2 = (dbaccess1DataSet.table2DataTable)
dbaccess1DataSet.table2.GetChanges(DataRowState.Deleted);

dbaccess1DataSet.table2DataTable newtable2 = (dbaccess1DataSet.table2DataTable)
dbaccess1DataSet.table2.GetChanges(DataRowState.Added);

if (modifiedtable2 != null)
{
table2TableAdapter.Update(modifiedtable2);
}
if (deletedtable2 != null)
{
table2TableAdapter.Update(deletedtable2);
}
if (newtable2 != null)
{
table2TableAdapter.Update(newtable2);
}

dbaccess1DataSet.AcceptChanges();
}