ado.net problem... Modify

Question

0.00/5 (No votes)

See more:

hey...
look this code why it doesnt work ?

C#

string sqlc = System.Configuration.ConfigurationManager.ConnectionStrings["ChattersDB"].ConnectionString;
System.Data.SqlClient.SqlConnection sc = new    System.Data.SqlClient.SqlConnection(sqlc);
string sqlcommand = "UPDATE UserPubInf SET Name = @Name WHERE Username = 'ali'";//+ "'" + Session["UsernameSession"].ToString() + "'";
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sqlcommand, sc);
 System.Data.SqlClient.SqlParameter sp = new System.Data.SqlClient.SqlParameter("@Name", System.Data.SqlDbType.NVarChar, 50);
sp.Value = txtName.Text ;
cmd.Parameters.Add(sp);
sc.Open();
cmd.ExecuteNonQuery();
sc.Close();

i want to modify column by textbox named txtName .... but it doesnt work whereas when i dnt use cvariable it work as well ...
i need use variable to define my column value....
please elp

Posted 2-Oct-12 5:24am

ali_heidari_

Updated 10-Mar-13 5:38am

v2

Add a Solution

Comments

sjelen 2-Oct-12 12:09pm

And what is the error you get?

ali_heidari_ 2-Oct-12 15:51pm

i dont get error... just my codes dnt work

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)

Kamalkant(kk) · Accepted Answer · 2012-10-02T06:00:00

Solution 1

In place of

c3

 System.Data.SqlClient.SqlParameter sp = new System.Data.SqlClient.SqlParameter("Name", System.Data.SqlDbType.NVarChar, 50);
sp.Value = txtName.Text ;
cmd.Parameters.Add(sp);

You can write:

C#

cmd.Parameters.AddWithValue("@Name",txtName.Text.Trim());

Posted 2-Oct-12 6:00am

Kamalkant(kk)

Updated 2-Oct-12 8:53am

v3

Comments

ali_heidari_ 2-Oct-12 16:08pm

i dnt know why , but it didnt work at all, if i define a string value it works but when i use a variable it doesnt work at all ... its problem is with variables :S