I hope this isn't a repost but I couldn't find an answer yet.
How can I connect to a LibreOfficeBase-database in C#? I don't have MS Access, that's why I only have Libre. So far, this is what I wrote:
private void add_Click(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection();
OleDbCommand cmd = new OleDbCommand();
OleDbDataReader reader;
con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" +
"Data Source=C:\\Users\\user\\Desktop\\data.odb;";
cmd.Connection = con;
cmd.CommandText = "INSERT INTO data(name, age)" +
"VALUES('" + FamilyName.Text + "', '" + Age.Text +"')";
try
{
con.Open();
reader = cmd.ExecuteReader();
reader.Close();
con.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
My database is called data.odb and of course it isn't working, because this method is for .accdb files. What do I do for .odb files?
odb is openoffice database. There is a MySQL connector present for working with odb file see here https://wiki.openoffice.org/wiki/Database/Drivers/MySQL_Native/1.0.
Also you might want to go through OpenOffice documentation https://wiki.openoffice.org/wiki/Database#Developer which says how to connect to MS Access https://wiki.openoffice.org/wiki/Connecting_to_Microsoft_Access
Related
public string ss = "Data Source=D\\SQLEXPRESS;Initial Catalog=gym;Integrated Security=True";
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
string q2 = "insert into gym.dbo.customer (name, weight, height, add_class, gender, fees) values ('" + this.textBox1.Text + "','" + this.textBox2.Text + "','" + this.textBox3.Text + "','" + this.comboBox1.Text + "','" + this.comboBox2.Text + "','" + this.comboBox3.Text + " ') ;";
SqlConnection con = new SqlConnection(ss);
SqlCommand cmd = new SqlCommand(q2, con);
SqlDataReader read;
try
{
con.Open();
read = cmd.ExecuteReader();
MessageBox.Show("Welcome to our gym");
while (read.Read()) { };
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
How can I insert and save data into the database using Visual Studio and C#?
This code throws an error. Anyone please give the suggestion to me to solve the error.
image description
At first make sure your the data type of different column of customer table.
Then make sure what type of data you have to save for combobox.
you have to get the selected value from your Combobox. combobox1,combobox2,combobox3 retuns only the class name
System.Windows.Forms.ComboBox
Besides others, it is recommended to use parameter .. like this:
You can follow this example
private void button1_Click(object sender, EventArgs e)
{
using(SqlConnection con = new SqlConnection(#"Data Source=(LocalDB)\v11.0;AttachDbFilename=c:\users\abdul samad\documents\visual studio 2013\Projects\newpro\newpro\Database1.mdf;Integrated Security=True"))
{
try
{
using (var cmd = new SqlCommand("INSERT INTO registor (Name, FullName, Password, Email, Gander) VALUES (#Name,#Fullname,#Password,#Email, #Gander)"))
{
cmd.Connection = con;
cmd.Parameters.Add("#Name", txtfname.Text);
cmd.Parameters.Add("#Fullname", txtfname.Text);
cmd.Parameters.Add("#Password", txtpass.Text);
cmd.Parameters.Add("#Email", txtemail.Text);
cmd.Parameters.Add("#Gander", comboBox1.GetItemText(comboBox1.SelectedItem));
con.Open()
if(cmd.ExecuteNonQuery() > 0)
{
MessageBox.Show("Record inserted");
}
else
{
MessageBox.Show("Record failed");
}
}
}
catch (Exception e)
{
MessageBox.Show("Error during insert: " + e.Message);
}
}
}
The comments are getting a bit busy, so this is the sort of thing you need to do (including parameterising the query):
Specifically, you don't need a reader for an insert statement as it doesn't return a result set.
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
var sql = "insert into dbo.customer ...";
using (var con = new SqlConnection(ss))
{
var cmd = new SqlCommand(sql , con);
con.Open();
cmd.ExecuteScalar();
MessageBox.Show("Welcome to our gym");
}
}
Hi check that customer table is available in gym Database.
else try this link
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
SqlCommand cmd = new SqlCommand("insert into customer (name,weight,height,add_class,gender,fees) values(#name,#weight,#height,#add_class,#gender,#fees)", con);
cmd.Parameters.AddWithValue("name", this.textBox1.Text);
if (con.State == ConnectionState.Closed)
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}
I found that your connection string declaration is wrong
public string ss = "Data Source=D\\SQLEXPRESS;Initial Catalog=gym;Integrated Security=True";
need to update like below
public string ss = "Data Source=abc\\SQLEXPRESS;Initial Catalog=gym; user id=sa; Password=123456";
Data source will be not be D, It should be Server name.
enter image description here
what is the problem in my code?
private void button1_Click(object sender, EventArgs e)
{
OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\extract step one\extract1.accdb;Persist Security Info=True";
String kerdes = Convert.ToString(textBox1.Text);
String valaszok = Convert.ToString(textBox2.Text);
OleDbCommand cmd = new OleDbCommand("INSERT into extract (kerdes, valaszok) Values(#kerdes, #valaszok)");
cmd.Connection = conn;
conn.Open();
if (conn.State == ConnectionState.Open)
{
cmd.Parameters.Add("#kerdes", OleDbType.VarChar).Value = kerdes;
cmd.Parameters.Add("#valaszok", OleDbType.VarChar).Value = valaszok;
try
{
cmd.ExecuteNonQuery();
MessageBox.Show("Data Added");
conn.Close();
}
catch (OleDbException ex)
{
MessageBox.Show(ex.Source);
conn.Close();
}
}
else
{
MessageBox.Show("Connection Failed");
}
}
When I click the button it says:
Microsoft Office Access Database Engine
I made the database with Access. Any ideas?
OleDbCommand does not support named parameters - use ? instead:
OleDbCommand cmd = new OleDbCommand("INSERT into extract (kerdes, valaszok) Values(?, ?)");
I would also wrap both the command and connection in using blocks to ensure that the resources are disposed of properly.
You need to change your parameters to:
cmd.Parameters.AddWithValue("#kerdes", kerdes);
cmd.Parameters.AddWithValue("#valaszok", valaszok);
This needs to be done in addition to the above comment of changing your query to:
OleDbCommand cmd = new OleDbCommand("INSERT into extract (kerdes, valaszok) Values(?, ?)");
protected void Button1_Click(object sender, EventArgs e)
{
try
{
string MyConString = "SERVER=http://10.54.3.208:8080/Ager/person;" + "DATABASE=agero;" + "UID=root;" + "PASSWORD=root;";
MySqlConnection con = new MySqlConnection(MyConString);
//MySqlConnection command = con.CreateCommand();
con.Open();
string s = "select * from boopathi where STU_ID =#sid and STU_PWD =#pwd";
MySqlCommand cmd = new MySqlCommand(s, con);
cmd.Parameters.AddWithValue("#sid", TextBox1.Text.ToString());
cmd.Parameters.AddWithValue("#pwd", TextBox2.Text.ToString());
cmd.ExecuteNonQuery();
MySqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
if (dr.HasRows == true)
{
Server.Transfer("WebForm1.aspx");
}
}
//close connection
con.Close();
}
catch (Exception ex)
{
Response.Write("An error occured: " + ex.Message);
}
}
In localhost it is working perfectly. Once I set my remote link instead of localhost. It's not connecting anymore. I am getting exception like Unable to connect to any of the specified MySQL hosts.
Try it:-
MySqlConnection c = new MySqlConnection("server=10.54.3.208; database=agero; uid=root; pwd=root");
OR
string MyConString = "SERVER=10.54.3.208;" + "DATABASE=agero;" + "UID=root;" + "Pwd=root;";
refer this link for more information MySQL Connector
I hope it may help you.
Try this one:
http://www.c-sharpcorner.com/uploadfile/camilord/connecting-to-remote-mysql-linux-server-using-visual-C-Sharp/
I hope this will solve your problem
i have this code for insert data into access 2013
after click in the save button data insert into dataGridView and show
and when stop program and restart this,data not stored in the DB.I've done a lot of searches but can't find the solution. my class code and my button save code
class DB
{
public static OleDbConnection con = new OleDbConnection();
static DB()
{
con.ConnectionString = "Provider=MICROSOFT.ACE.OLEDB.12.0; " +
"Data Source=|DataDirectory|//Phonebook-db.accdb;Persist Security Info=True";
}
public static void Insert(Person p1)
{
try
{
OleDbCommand cmd = con.CreateCommand();
con.Open();
string s = "INSERT INTO Industrialist (S_Name,S_Family,S_Telephone,S_Major)VALUES('" + p1.Name + "','" + p1.Family + "','" + p1.Telephone + "','" + p1.Major + "')";
cmd.CommandType = CommandType.Text;
cmd.CommandText = s;
cmd.ExecuteNonQuery();
con.Close();
System.Windows.Forms.MessageBox.Show("Record successfully Added");
}
catch (OleDbException exp) { MessageBox.Show(exp.ToString()); }
}
}
Person p = new Person();
p.Name = txtname.Text;
p.Family = txtfamily.Text;
p.Telephone = txttell.Text;
p.Major = txtmajor.Text;
DB.Insert(p);
txttell.Text = "";
txtmajor.Text = "";
txtname.Text = "";
txtfamily.Text = "";
List<Person> people = DB.GetPeople();
dataGridView1.DataSource = people;
Choose your ACCDB file listed in your project files, select Copy To Output Directory and set its value to Never (And remember that |DataDirectory| is a substitution strings that points (for ASP.NET projects) to APP_DATA, your record is inserted in the database copied in that directory.
Said that please consider to use a parameterized query to create an sql command, not string concatenations
try
{
OleDbCommand cmd = con.CreateCommand();
con.Open();
string s = "INSERT INTO Industrialist (S_Name,S_Family,S_Telephone,S_Major)VALUES(" +
"?,?,?,?)";
cmd.CommandText = s;
cmd.Parameters.AddWithValue("#p1",p.Name);
cmd.Parameters.AddWithValue("#p2",p.Family);
cmd.Parameters.AddWithValue("#p3",p.Telephone);
cmd.Parameters.AddWithValue("#p4",p.Major);
cmd.ExecuteNonQuery();
con.Close();
System.Windows.Forms.MessageBox.Show("Record successfully Added");
}
catch (OleDbException exp) { MessageBox.Show(exp.ToString()); }
Of course do not close the connection before executing the command.
Another point to change is the usage pattern of your connection. Do not create a global connection and keep it around for the lifetime of your application. Simply create and use it when needed and close/dispose immediately after
using(OleDbConnection con = new OleDbConnection("Provider=MICROSOFT.ACE.OLEDB.12.0; " +
"Data Source=|DataDirectory|//Phonebook-db.accdb;" +
"Persist Security Info=True"))
{
try
{
OleDbCommand cmd = con.CreateCommand();
....
}
} // <- Here at the closing brace the connectio will be close and disposed
Hi i want to basically insert the values in the labels to a table in ms access.
I have done it for textbox and it stores but for Label When i try to store it no error shows up but it does not store in the database what should i do? I am using the following code
static OleDbConnection con = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\New folder\Project 1.0\WebSite1\New Microsoft Office Access 2007 Database.accdb");
OleDbDataAdapter ada = new OleDbDataAdapter();
OleDbCommand cmd = new OleDbCommand();
OleDbDataReader dr;
protected void Button1_Click(object sender, EventArgs e)
{
try
{
string str = "insert into Orders (Products, Amount)" + " values (#p1, #p2)";
con.Open();
cmd = new OleDbCommand(str, con);
cmd.Parameters.AddWithValue("#p1", Label18.Text);
cmd.Parameters.AddWithValue("#p2", Label16.Text);
cmd.ExecuteNonQuery();
con.Close();
}
catch
{
Console.WriteLine("Exception Occured");
}
finally
{
if (con != null && con.State != ConnectionState.Closed)
{ con.Close(); }
}
}
Also i tried storing textbox value into the same Table "Orders" under the column "Address" but facing the same above issue...The table does not update. I have used this code before for other textboxes etc for different tables and it has worked fine..
static OleDbConnection con = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\New folder\Project 1.0\WebSite1\New Microsoft Office Access 2007 Database.accdb");
OleDbDataAdapter ada = new OleDbDataAdapter();
OleDbCommand cmd = new OleDbCommand();
OleDbDataReader dr;
protected void Button1_Click(object sender, EventArgs e)
{
{
string str = "insert into Orders (Address)" + " values (#p1)";
con.Open();
cmd = new OleDbCommand(str, con);
cmd.Parameters.AddWithValue("#p1", TextBox1.Text);
cmd.ExecuteNonQuery();
con.Close();
}
}
The OLE DB .NET Provider does not support named parameters for passing
parameters to an SQL statement
try with
string str = "insert into Orders (Products, Amount) values (?,?)";
You can change the code as below
protected void Button1_Click(object sender, EventArgs e)
{
try
{
using (OleDbConnection con = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\New folder\Project 1.0\WebSite1\New Microsoft Office Access 2007 Database.accdb"))
using (OleDbCommand cmd = new OleDbCommand("insert into Orders (Products, Amount) values (?,?)", con))
{
cmd.Parameters.AddWithValue("#p1", Label18.Text);
cmd.Parameters.AddWithValue("#p2", int.Parse(Label16.Text));
con.Open();
int no = cmd.ExecuteNonQuery();
Console.WriteLine("number of rows affected = " + no);
}
}
catch (Exception ex)
{
Console.WriteLine("Exception Occured :" ex.ToString());
}
}