Hey I get an error saying there is something wrong with my code when inserting into a database, can't quite find it. The error suggests it is something in the INSERT statement, but appears on the line "cmd.ExecuteNonQuery();". I'm using an access database.
Error: Syntax error in INSERT INTO statement.
con.Open();
string mysql;
mysql = "INSERT INTO [User](FirstName,Surname,Age,HouseNumber,PostCode,Username,Password)
VALUES (?,?,?,?,?,?,?)";
OleDbCommand cmd = new OleDbCommand(mysql, con);
cmd.Parameters.AddWithValue("#p1", tbFirstName.Text);
cmd.Parameters.AddWithValue("#p2", tbSurname.Text);
cmd.Parameters.AddWithValue("#p3", int.Parse(tbAge.Text));
cmd.Parameters.AddWithValue("#p4", tbAddress1.Text);
cmd.Parameters.AddWithValue("#p5", tbPostCode.Text);
cmd.Parameters.AddWithValue("#p6", tbUsername.Text);
cmd.Parameters.AddWithValue("#p7", tbPassword.Text);
cmd.ExecuteNonQuery();
con.Close();
when you add parameters with value you need to convert it to matching type, if age is number then
cmd.Parameters.AddWithValue("#p3", int.Parse(tbAge.Text));
and also User is key word you can try with
"INSERT INTO [User] ([FirstName], [Surname], [Age], [HouseNumber], [PostCode], [Username], [Password]) VALUES (?,?,?,?,?,?,?)";
Have you tried replacing the ? with your parameters?
Correction: I believe you have to add OleDBParameters like so:
con.Open();
string mysql;
mysql = "INSERT INTO User(FirstName,Surname,Age,HouseNumber,PostCode,Username,Password)
VALUES (#p1,#p2,#p3,#p4,#p5,#p6,#p7)";
OleDbCommand cmd = new OleDbCommand(mysql, con);
cmd.Parameters.AddRange(new OleDbParameter[]
{
new OleDbParameter("#p1", tbFirstName.Text),
new OleDbParameter("#p2", tbSurname.Text),
...
});
cmd.ExecuteNonQuery();
con.Close();
Related
when i try to inserting Data in an Acess Database from Visual stutio using C# i keep getting this Error "System.Data.OleDb.OleDbException: Syntax error in INSERT INTO statement."
protected void Button1_Click1(object sender, EventArgs e)
{
Guid newGUID = Guid.NewGuid();
OleDbConnection conn = new OleDbConnection(" Provider = Microsoft.ACE.OLEDB.12.0;" + "Data Source = " + Server.MapPath("App_Data/Group.accdb"));
OleDbCommand command = new OleDbCommand ("INSERT INTO [User] ( [Userid], [UserName], [Password], [Email], [Country], [CartID], [Address] ) VALUES (#Uname,#password,#email,#country,#address,#userid,#cartID)", conn);
conn.Open();
command.Parameters.AddWithValue("#userid", Convert.ToString(newGUID));
command.Parameters.AddWithValue("#Uname", username.Text);
command.Parameters.AddWithValue("#password", username.Text);
command.Parameters.AddWithValue("#email", email.Text);
command.Parameters.AddWithValue("#country", DropDownList1.SelectedItem.ToString());
command.Parameters.AddWithValue("#cartID", Convert.ToString(newGUID));
command.Parameters.AddWithValue("#address", address.Text);
command.ExecuteNonQuery();
conn.Close();
Response.Redirect("Login.aspx");
Response.Write("Registration is successful");
}
User is a reserved keyword. You need to enclose it between square brackets as you do for the fields
However your code has a more serious error.
Your parameters placeholders are not in the correct order in respect to the field names. So you need to fix the query and then remember that in
OleDb the parameters are not recognized by their name, but by their position.
Thus the code that add the parameters to collection should respect the order in which you want to retrieve the parameters value
OleDbCommand command = new OleDbCommand (#"INSERT INTO [User]
( [Userid], [UserName], [Password], [Email],
[Country], [CartID], [Address] ) VALUES
( #userid, #Uname, #password,#email,
#country,#cartID, #address)", conn);
conn.Open();
command.Parameters.AddWithValue("#userid", address.Text);
command.Parameters.AddWithValue("#Uname", username.Text);
command.Parameters.AddWithValue("#password", username.Text);
command.Parameters.AddWithValue("#email", email.Text);
command.Parameters.AddWithValue("#country",DropDownList1.SelectedItem.ToString());
command.Parameters.AddWithValue("#cartID", address.Text);
command.Parameters.AddWithValue("#address", address.Text);
command.ExecuteNonQuery();
By the way, you are passing the username textbox to both the Username field and UserID and Password. This seems unlikely (the same for the address textbox)
Finally it seems wrong also the use of a string to set the value of the fields cartID and UserID. The method AddWithValue has no way to know what is the DataType of the field that will be updated by the parameter. So it creates a parameter based on the datatype of the value. In your case the address.Text and username.Text are string, but if the database fields expects an integer bad things will happen.
If this is the case you should be certain that you have an integer and use
command.Parameters.AddWithValue("#userid", Convert.ToInt32(address.Text));
command.Parameters.AddWithValue("#cartID", Convert.ToInt32(address.Text));
In any case it is better use the correct Add method
command.Parameters.Add("#userid", OleDbType.Integer).Value = Convert.ToInt32(address.Text));
I am simply making a windows form in c# where I can insert, update and delete the data.
I want to insert data in URDU text. I am done with inserting data with following code :
SqlCommand cmd = new SqlCommand("insert into tblTeams values (#ID, #SchoolName, #TeamName)", con);
cmd.Parameters.AddWithValue("#ID", txtBoxID.Text);
cmd.Parameters.AddWithValue("#SchoolName", txtBoxSName.Text);
cmd.Parameters.AddWithValue("#TeamName", txtBoxTName.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
But when trying to update data not getting any clue how to do it...
SqlDataAdapter sda = new SqlDataAdapter("update tblTeams set SchoolName='"+txtBoxSName.Text+"',TeamName='"+txtBoxTName.Text+"'where ID='"+txtBoxID.Text+"' ", con);
con.Open();
sda.SelectCommand.ExecuteNonQuery();
con.Close();
Above piece of code updates the database but not in URDU, in database only "?????" shows...
In SQL server all the insert, update and delete works but I want to do it in front end...
Form design is also attached...enter image description here
Thanks in advance!
Done with updation also and thanks for your support...
Here is the code:
SqlCommand cmd = new SqlCommand("update tblTeams set SchoolName=#SchoolName, TeamName=#TeamName where ID=#ID ", con);
cmd.Parameters.AddWithValue("#ID", txtBoxID.Text);
cmd.Parameters.AddWithValue("#SchoolName", txtBoxSName.Text);
cmd.Parameters.AddWithValue("#TeamName", txtBoxTName.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
This is most likely happening because your columns don't support Unicode. You'll need to use nvarchar, or nchar in your columns.
Alternatively, your TextBox doesn't support unicode text. Try a different font, like Arial.
Don't use the update code without Parameters. It's vulnerable to SQL injection attacks. Instead, use parameters in both, like you did in the first.
Finally, you can prefix the insert values with N'urdutexthere', like this:
SqlCommand cmd = new SqlCommand("UPDATE tblTeams SET SchoolName=N'#SchoolName',TeamName=N'#TeamName' WHERE ID='#ID'", con);
cmd.Parameters.AddWithValue("#ID", txtBoxID.Text);
cmd.Parameters.AddWithValue("#SchoolName", txtBoxSName.Text);
cmd.Parameters.AddWithValue("#TeamName", txtBoxTName.Text);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
when i hit the add button to insert a new book, i get an error at cmd.ExecuteNonQuery(); Syntax error in INSERT INTO statement. Am i missing anything?
protected void btnAddBook_Click(object sender, EventArgs e)
{
string connect = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|Bookdb.accdb";
using (OleDbConnection conn = new OleDbConnection(connect))
{
OleDbCommand cmd = new OleDbCommand("INSERT INTO Books (Title, Author, Price, Edition) VALUES (#Title, #Author, #Price, #Edition)");
cmd.CommandType = CommandType.Text;
cmd.Connection = conn;
cmd.Parameters.AddWithValue("#Title", TextBox1.Text);
cmd.Parameters.AddWithValue("#Author", TextBox2.Text);
cmd.Parameters.AddWithValue("#Price", TextBox3.Text);
cmd.Parameters.AddWithValue("#Edition", TextBox4.Text);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}
The only reason that I can find as a possible failure for your code is if the Price field is a numeric field in your database table. You are creating a parameter with AddWithValue and this method creates a parameter whose datatype is derived from the datatype of the value passed. You pass a string (TextBox3.Text) and so AddWithValue creates a string parameter.
You could try to force the AddWithValue to create a numeric parameter with
cmd.Parameters.AddWithValue("#Price", Convert.ToDecimal(TextBox3.Text));
(Of course assuming a decimal Price column)
Right before you call conn.Open(), you need to call cmd.Prepare(), so that all the parameters you set are actually loaded into the SQL statement.
I write code to insert some values to access database with C#/ado.net but there is an error appear called "error in connection" although i use select command to retrieve some valuesin the same program and works successfully
OleDbConnection conn = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\Mohamed\documents\visual studio 2012\Projects\Library Store\Library Store\Book.accdb");
conn.Open();
OleDbCommand cmd = new OleDbCommand("INSERT INTO Store VALUES (#val1,#val2,#val3,#val4,#val5,#val6)", conn);
cmd.Parameters.AddWithValue("#val1", ISBNTB.Text.Trim());
cmd.Parameters.AddWithValue("#val2", NameTB.Text.Trim());
cmd.Parameters.AddWithValue("#val3", GategoryTB.Text.Trim());
cmd.Parameters.AddWithValue("#val4", AuthorTB.Text.Trim());
cmd.Parameters.AddWithValue("#val5", int.Parse(CostTB.Text.Trim()));
cmd.Parameters.AddWithValue("#val6", dateTimePicker1.Text);
cmd.ExecuteNonQuery();
MessageBox.Show(" Done :)");
conn.Close();
thanks;
Give this a shot, you didn't specify what error it was but this should help you out if anythign figure out if you really have all columns your trying to insert to
Try writing you sql statement like so
INSERT INTO Table ( Column1, Column2 ) VALUES
( Value1, Value2 ), ( Value1, Value2 )
OleDbConnection conn = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\Mohamed\documents\visual studio 2012\Projects\Library Store\Library Store\Book.accdb");
conn.Open();
OleDbCommand cmd = new OleDbCommand("INSERT INTO Store **( Column1, Column2 )** VALUES(#val1,#val2,#val3,#val4,#val5,#val6)", conn);
cmd.Parameters.AddWithValue("#val1", ISBNTB.Text.Trim());
cmd.Parameters.AddWithValue("#val2", NameTB.Text.Trim());
cmd.Parameters.AddWithValue("#val3", GategoryTB.Text.Trim());
cmd.Parameters.AddWithValue("#val4", AuthorTB.Text.Trim());
cmd.Parameters.AddWithValue("#val5", int.Parse(CostTB.Text.Trim()));
cmd.Parameters.AddWithValue("#val6", dateTimePicker1.Text);
cmd.ExecuteNonQuery();
MessageBox.Show(" Done :)");
conn.Close();
You need to specify the column names in your insert statement so that the DB knows where the data is going.
"INSERT INTO Store (Column1, Column2) VALUES (#val1, #val2)"
If you insert value to database with all column you can use this query
INSERT INTO Store VALUES(#val1,#val2,#val3,#val4,#val5,#val6)
If you insert value to database with few column you will get this error, and you must write it as
INSERT INTO Store **( Column1, Column2 )** VALUES(#val1,#val2,#val3,#val4,#val5,#val6)
Platform used : Microsoft Visual Studio 2010 (C#)
Database : SQL Server 2008 R2 Express
I want to get the text from the drop down and put it into database table. I am getting error saying
Invalid column name 'Type'.
though column is present in database table.
da.InsertCommand = new SqlCommand("insert into tblProductMaster ([Name],[Type],[Height],[Width],[Length],[Price]) values( #Name , #Type , #Height , #Width , #Length , #Price )", con);
da.InsertCommand.Parameters.Add("#Name", SqlDbType.VarChar).Value = txtName.Text;
da.InsertCommand.Parameters.Add("#Type", SqlDbType.VarChar, 10).Value = ddlType.SelectedItem.ToString();
da.InsertCommand.Parameters.Add("#Height", SqlDbType.Float).Value = float.Parse(txtHeight.Text);
da.InsertCommand.Parameters.Add("#Width", SqlDbType.Float).Value = float.Parse(txtWidth.Text);
da.InsertCommand.Parameters.Add("#Length", SqlDbType.Float).Value = float.Parse(txtLength.Text);
da.InsertCommand.Parameters.Add("#Price", SqlDbType.SmallMoney).Value = int.Parse(txtPrice.Text);
da.InsertCommand.ExecuteNonQuery();
I believe your problem is that you are using a SQL Server reserved word ("Size") and you have not properly encapsulated it in your INSERT statement.
Try this:
da.InsertCommand = new SqlCommand("insert into tblProductMaster ([Name], [Size], [Height], [Width], [Length], [Price]) values(#Name, #Size, #Height, #Width, #Length, #Price)", con);
Notice the [ & ] around the column names... this will tell SQL Server to treat them as columns.
WARNING: I highly recommend you change these column names if you can. Using reserved words of any product is very poor database design and will continue to cause you problems and/or extra work. Better to fix it sooner than later.
#Sagar try this
string strCmd = #"insert into tblProductMaster ([Name], [Size], [Height], [Width], [Length], [Price]) values(#Name, #Size, #Height, #Width, #Length, #Price)";
Then
SqlCommand cmd = new SqlCommand(strCmd, con);
cmd.Parameters.Add("#Size", SqlDbType.VarChar, 10, ddlSize.SelectedItem.Value.ToString());
da.InsertCommand = cmd;