How to cleanly update database from Datagridview?
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Best solution
I have googled a lot on updating datagridview to database after editing using the adapter. I referred to several websites that gave me similar examples like the one below. However, I'm getting the "ArgumentNullException was unhandled" error at the first line of my button2_Click. I am new to programming and I have been taught to declare the adapter as a global, and I did. Why am I still getting null value? Any help would be appreciated. Thank you! DataTable dt; DataSet ds; OleDbDataAdapter...
Answer:
I think it's simply a confussion between the variables in diffeent scopes. The ds you use in second...
Daz at Stack Overflow Mark as irrelevant Undo
Other solutions
I had followed a tutorial on how to connect to an existing MS Access database using VB 2008. I was able to open the data source and drag the datagrid onto the form which created all the necessary adapters including the bindingsourcenavigator. In the...
Answer:
Assuming the code is the same between the example and your own DB, maybe it's a permissions issue involving...
Toad at Yahoo! Answers Mark as irrelevant Undo
I'm wondering because I'm re-working some code and noticed that my database calls reference the table as "database.table" in the string. I have a constant defined with the database name, but for some reason I didn't concatenate it into my database...
Answer:
If you have multiple databases running on the same server, and your user credentials allow access to...
Jon Moter at Quora Mark as irrelevant Undo
I trying to make a code to Delete and Update Access 2007 database after remove a selected item from a listbox in VB 2008. [using "Remove" button that i create] pervious i already make a button to View data from database and Remove from listbox...
Answer:
Delete is DELETE FROM tablename WHERE fieldname = 'value' http://www.w3schools.com/sql/sql_delete.&hellip...
Prince at Yahoo! Answers Mark as irrelevant Undo
I have a sql server express 2005 database and i locally added a data base file. How do i programatically update the database, and when i say update i mean add data to the database, as i just have 2 tables with no data in them? Please help
estonpil... at Yahoo! Answers Mark as irrelevant Undo
{ // // add whiskey from menu string connection = @" Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\Database.accdb"; OleDbConnection conn = new OleDbConnection(connection); try { conn.Open(); } catch (Exception) { MessageBox...
Answer:
If it's not throwing any errors then it must not be finding any records that match your criteria. Are...
Nameless at Yahoo! Answers Mark as irrelevant Undo
What I have are two different tables. One called Names with two fields (NameID and Name) and the other called Nation with three fields (NationID, NameID and Nation). I dont know why they are split like this but they are and I am not allowed to change...
Answer:
It is not clear to me - are you using Access only or are you connecting to Access through VB.net or...
Chris P at Yahoo! Answers Mark as irrelevant Undo
So I checked out a site I came across, "Rank statistics score , Ranking Stats". I tested some random websites, and found that one of them - I just can't remember which one, though that is not relevant - said in the "Full WHOIS Lookup"...
Answer:
Hi! I went to Rank statistics score , Ranking Stats, and checked for a domain that they didn't have...
Goran Duskic at Quora Mark as irrelevant Undo
Hi. I'm sorry I'm new to this. I am creating a simple information system and in my search form I want to have a combobox where users can select like "By: ID Number" or "By: Name" then it will also have a textbox to input names or...
Answer:
' Sample source code http://www.andronscomputing.com/getfile.… Private gblRecordSet Private adodbConnection...
Kendall at Yahoo! Answers Mark as irrelevant Undo
I am using the default database and i have it set on a website and i am using the comment section as for people to put their comment and saves it. I've set up the update query but it did the exact opposite. instead of updating from the text box to the...
Answer:
Does not look easy. May be you can contact a database expert. Check websites like http://getafreelnacer...
Judge Not at Yahoo! Answers Mark as irrelevant Undo
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