Problem with updating data in Access

Question

0.00/5 (No votes)

See more:

I am updating a table using another table such that when one table doesn't contain a value the other table is updated.
The Query that I am using is:

Update History set Termination_date = 'date', Termination_time = 'time', Link_Status='1' WHERE Name NOT IN (SELECT NAME FROM IP_State_Down)

When used via ACCESS the Query works like magic but when it is embedded like this:

string Date1 = System.DateTime.Now.ToShortDateString();
            string Time1 = System.DateTime.Now.ToLongTimeString();
            string DateTime1 = Date1 + " " + Time1;
            string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\\Database\\aharchi.mdb";
            OleDbConnection conn = new OleDbConnection(connStr);
            OleDbCommand com = new OleDbCommand();
            conn.Open();
            com.Connection = conn;
            com.CommandText = "Update History set Termination_date = 'Date1', Termination_time = 'Time1', Link_Status='1' WHERE Name NOT IN (SELECT NAME FROM IP_State_Down)";
            com.ExecuteNonQuery();
            conn.Close();

the code doesn't work like it's intended. Please let me know what to do

I am really sorry ALL!!!! The problem was identified to be from another part of the program not this piece

Posted 20-Mar-13 6:11am

09hadi

Updated 21-Mar-13 4:25am

v5

Add a Solution

Comments

ZurdoDev 20-Mar-13 12:15pm

If that is the literal code you are running I would guess it is failing on trying to put the word "Hello" into the Termination_date field, which I am assuming is a date field. Are you getting errors?

09hadi 20-Mar-13 12:18pm

No there is no error. The field is Long Text. So there is no error. As the code runs the whole History table get new termination time for every record.

ZurdoDev 20-Mar-13 12:26pm

So, dumb question but are you sure your code is pointing to the same database that you are manually looking in?

09hadi 20-Mar-13 12:27pm

yes

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)

José Amílcar Casimiro · Answer 1 · 2013-03-20T07:13:00

Hi,

(...) the code doesn't work like it's intended (...)

Probably because:

C#

string Date1 = System.DateTime.Now.ToShortDateString();
string Time1 = System.DateTime.Now.ToLongTimeString();
string DateTime1 = Date1 + " " + Time1;
string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\\Database\\aharchi.mdb";
OleDbConnection conn = new OleDbConnection(connStr);
OleDbCommand com = new OleDbCommand();
conn.Open();
com.Connection = conn;
com.CommandText = "Update History set Termination_date = '" + Date1 + "', Termination_time = '" + Time1 + "', Link_Status='1' WHERE Name NOT IN (SELECT NAME FROM IP_State_Down)";
com.ExecuteNonQuery();
conn.Close();

Pay attention to the code with bold.

Good luck.