Inserting A Name Into A MySql Database Via Web Application?
Feb 19, 2011
I am having a problem in inserting characters such as a name into a mySql database via an Asp.net application.
If I inserted numbers, the app adds the numbers into the database and I can see them, but the case with names, the name column in the database shows no values (keeps on showing null values) along with the numbers added.
fter much reading and trying I still cant seem to get this to work:OdbcCommand cmd = new OdbcCommand("INSERT INTO User (Email) VALUES ('rusty@msn.com'); SELECT LAST_INSERT_ID();", cn);
I have an asp.net page connected to a MySql DB.When I try to insert/update values from the webpage into the DB the chars are shown in the DB as question marks (I am using SP).If i will write a query directly in the DB, It will work and the chars will be displayed correctly.
The DB default charset is utf8, and the column collation is utf8_general_ci.
Why does a very simple script which inserts 26,000 records into a mysql database (myisam, no transactions) take 13 seconds in the php implementation, and then 35-50 seconds using mono+mysql connector? I thought asp.net was faster than php? Could the problem be the mono mysql connector is "platform independent", so the performance just stinks? or does asp.net suffer more overhead than php when it comes to executing each query? Aren't there any native linux binaries for mysql connector for mono that may be faster?
var key=KeyValue(); if(key==null){ var newKey=_repo.Add(this,provider); this.SetKeyValue(newKey); }else{ _repo.Add(this,provider); //NullReferenceException was unhandled by user code
My code is to update a record if it already exists in database else insert as a new record. My code is as follows:
protected void Button3_Click(object sender, EventArgs e) { OdbcConnection MyConnection = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=testcase;User=root;Password=root;Option=3;"); MyConnection.Open(); String MyString = "select fil_no,orderdate from temp_save where fil_no=? and orderdate=?"; OdbcCommand MyCmd = new OdbcCommand(MyString, MyConnection); MyCmd.Parameters.AddWithValue("", HiddenField4.Value); MyCmd.Parameters.AddWithValue("", TextBox3.Text); using (OdbcDataReader MyReader4 = MyCmd.ExecuteReader()) { //** if (MyReader4.Read()) { String MyString1 = "UPDATE temp_save SET order=? where fil_no=? AND orderdate=?"; OdbcCommand MyCmd1 = new OdbcCommand(MyString1, MyConnection); MyCmd1.Parameters.AddWithValue("", Editor1.Content.ToString()); MyCmd1.Parameters.AddWithValue("", HiddenField1.Value); MyCmd1.Parameters.AddWithValue("", TextBox3.Text); MyCmd1.ExecuteNonQuery(); } else { // set the SQL string String strSQL = "INSERT INTO temp_save (fil_no,order,orderdate) " + "VALUES (?,?,?)"; // Create the Command and set its properties OdbcCommand objCmd = new OdbcCommand(strSQL, MyConnection); objCmd.Parameters.AddWithValue("", HiddenField4.Value); objCmd.Parameters.AddWithValue("", Editor1.Content.ToString()); objCmd.Parameters.AddWithValue("", TextBox3.Text); // execute the command objCmd.ExecuteNonQuery(); } } }
I am getting the error as: ERROR [42000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.51-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order,orderdate) VALUES ('04050040272009',' &' at line 1
The datatype for fields in table temp_save are:
fil_no-->INT(15)( to store a 15 digit number) order-->LONGTEXT(to store contents from HTMLEditor(ajax control)) orderdate-->DATE(to store date)
protected void Button3_Click(object sender, EventArgs e) { //Create a connection to the database MySqlConnection conn = new MySqlConnection("Database=kid07025;Data Source=195.178.228.254;User Id=kid07025;Password=********"); //open the connection conn.Open(); //MySQL Query which updates the row where Anvandarnamn = Anvandarnamn (recieved from a cookie) MySqlCommand cmd = new MySqlCommand("UPDATE personer SET Information=?Information,Fnamn=?Fnamn,Enamn=?Enamn,Personnr=?Personnr,Adress=?Adress,Postnr=?Postnr,Ort=?Ort WHERE Anvandarnamn=?Anvandarnamn", conn); // Update with new text cmd.Parameters.AddWithValue("?Anvandarnamn", Request.Cookies["Anvandarnamn"].Value); cmd.Parameters.AddWithValue("?Information", TextBox1.Text); cmd.Parameters.AddWithValue("?Fnamn", TextBox2.Text); cmd.Parameters.AddWithValue("?Enamn", TextBox3.Text); cmd.Parameters.AddWithValue("?Personnr",TextBox4.Text); cmd.Parameters.AddWithValue("?Adress", TextBox5.Text); cmd.Parameters.AddWithValue("?Postnr", TextBox6.Text); cmd.Parameters.AddWithValue("?Ort", TextBox7.Text); cmd.ExecuteReader(); conn.Close(); RefreshProfile(); }
I don't know what I am doing wrong here, but the database doesn't get updated when I press the button.
Then I have prepared a model,controller,view for accessing and displaying the data. I am using LINQ o get the data from database but getting the exception:" A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)" I have also installed the MYSQL connector. provide me the solution to access the data using MYSQL and LINQ in MVC application
I have developed a web application with ASP.Net 2.0 (VB Code Behind) and I am using My SQL as database.
I wish to sell the web application from my other website to multiple users. What would you suggest to be the best way to deliver this application? Fact is I can compile the front end script and provide the compiled version but I am not sure how to provide the associated MySQL database to them. I need to make sure that the buyers are not able to alter any code in the application or modify the preset data in the MySQL database. I do not wish to use the Setup Based deployment method as it will require the buyers to have administrative rights on the server, which may not be available on shared hosting.
But at the same time they must be able to get the web application up and running with minimal effort. I must be honest with you that I have developed only HTML based static websites till now and this would the first time I am launching an ASP.Net application.
I'm in the market for an ASP.NET host to start learning on and to host personal projects. I've noticed most of them provided both MySQL and MS SQL databases. However, usually they will only provided a couple MS SQL databases, but a large number (like 10) MySQL Databases. Can I use a MySQL database as a back end to a ASP.NET website? If so why would I want to pay extra to use MS SQL over MySQL?
I've installed the Components from the links below. But I still can't find any SQL references when I try to add them? I'm wondering if anyone would know the reason for this? I just started with asp.net. I've found several other questions regarding code for connecting but I can't find anyone who've had trouble with the Connector/components before?
I'm interesting in deploy the .net authentication system but with a little changes. The first thing is changing the database that it uses by default to MySQL database.I'm not wondering in how/what to change on the web.config rather how to get the scripts that build all the database that it need(tables and so..). After that I'll expend the user profile, maybe the roles and that enough for my website.So how to do a full move to MySql DB?
I want to use MVC 2 with MySQL database. Is it possible?because my shared hosting limits the size of SQL Server database, but there is no limit on Size of MySQL database.MySQL seems to take less disk space than SQL Server database which is costly on the Internet.
When I build the website and upload everything as it is, I get this error:
Quote:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) I guess I have to deploy Database, or?
Code: Sub btnLogin_OnClick(Src As Object, E As EventArgs) Dim myConnection As OleDbConnection Dim myCommand As OleDbCommand [code]....
I found this code for user authentication. How secure is this? Can this be bypassed? Can I protect a MySQL database with a password? Can people see a MySQL database's data if it's not protected?
