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a database error :"No value given for one or more required parameters."
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Closed 3 years ago.
I am trying to insert data into ms access
I have rechecked the code many times seems nothing wrong
private void registerbutton_Click(object sender, EventArgs e)
{
registerconnection.Open();
OleDbCommand insert = new OleDbCommand();
insert.Connection = registerconnection;
insert.CommandText = "insert into StudentDatabase (FirstName, LastName, DOB, City, State, Email, ContactNo, ContactNo2, Courses, Username, Password, DateRegister) values ('"+fnametextbox.Text+ "','" + lnametextbox.Text + "','" + dobtextbox.Text + "','" + citytextbox.Text + "','" + statetextbox.Text + "','" + emailtextbox.Text + "','" + ctcnotextbox.Text + "','" + ctcnotextbox2.Text + "','" + coursetextbox.Text + "','" + usernametextbox.Text + "','" + passwordtextbox.Text + "','" + registerdatetextbox.Text + "')";
insert.ExecuteNonQuery();
MessageBox.Show("Data inserted");
}
I expected it was able to insert the data but it turns out into an error
This shall help you...I did not test the code but i assume it will work.
http://dotnetsridhar.blogspot.com/2012/05/ma-access-database-for-windows-c.html
also check your textbox input value , some special character was a reserved character in SQL , example '; , if user type those special character on textbox and process by your current code logic , it may break because you try to add all string value without proper input validation handle and it may fail as a valid SQL statement...debugger will be your good friend here to diagnose further what is the "insert.CommandText" value
Related
I have a simple user interface for an inventory database. The operation will be insert into, edit existing, view data grid, etc....There are a total of 4 fields for the inventory. The insert statement I am using works but if one of the entries does not have a value then it shows an error when trying to insert.
" Data type mismatch in criteria expression "
command.CommandText = "insert into Inventory(SerialNumber,PartNumber,ROnumber,Location)
values ('" + txtPart.Text + "','" + txtSerial.Text + "','" +
txtRO.Text + "','" + txtLocation.Text + "')";
I assume it is because the code needs a value for each field so how do I get around this issue?.
Actually when you trying to use this query you have said the First Parameter is SerialNumber and then PartNumber and when you are passing its reverse.
command.CommandText = "insert into Inventory(SerialNumber,PartNumber,ROnumber,Location)
values ('" + txtPart.Text + "','" +
txtSerial.Text + "','" +
txtRO.Text + "','" +
txtLocation.Text + "')";
Due to this reason the fields you are entering have different size May be part number is bigger in size instead of SerialNumber or vice versa. So you should change it to
command.CommandText = "insert into Inventory(SerialNumber,PartNumber,ROnumber,Location)
values ('" + txtSerial.Text + "','" +
txtPart.Text + "','" +
txtRO.Text + "','" +
txtLocation.Text + "')";
I´m using C# Windows forms application and i got 5 items in a checklistbox.
Now I have to save these items into a MS Access database table.
Does anyone knows how i should do it?
(Sprachen = checkedlistbox)
private void button1_Click_1(object sender, EventArgs e)
{
try
{
connection.Open();
OleDbCommand command = new OleDbCommand();
command.Connection = connection;
command.CommandText = "INSERT INTO Employee (Vorname, Nachname, Wohnort, Geburtstag, Abteilung, Nummer, MKZ, Führerschein, Sprachen) values('" + Vorname.Text + "','" + Nachname.Text + "','" + Wohnort.Text + "','" + Geburtstag.Text + "','" + Abteilung.Text + "','" + Mitarbeiter.Text + "','" + MKZ.Text + "'," + Führerschein.Checked.ToString() + "," + Sprachen.SelectedItems + ")";
command.ExecuteNonQuery();
MessageBox.Show("Daten gespeichert!");
connection.Close();
}
catch (Exception ex)
{
MessageBox.Show("Error " + ex);
}
everytime i tried it with toString(), it gives me an error:
For at least one required parameter no value was specified.
I can only count how many items i´ve checked in the checklistbox.
Anyone got an solution?
Sprachen.SelectedItems returns list of selected items. If you are trying to insert the items which are checked in checkedlistbox then you have to loop for checklistbox.CheckedItems.
Instead of "Sprachen.SelectedItems" pass checklistbox.CheckedItems[0].ToString() as value and check the code. Note: 0 is hard coded.. later you can loop it
String type value must be passed within single quote. Check out last two fields.
I am trying to insert Data into MS ACCESS DB. Everything is fine. Connection, DB Path etc.
There is a table CIT in it.
I am using this Insert into query
string query = "INSERT INTO CIT (GRNO:, Name, FName, CNIC, Address, ContactNO, Gender, Qualification, DOB, RegDate, Photo) VALUES ('" + txtGRNO.Text + "','" + txtName.Text + "','" + txtFName.Text + "','1234','" + txtAddress.Text + "','" + txtContact.Text + "','" + cBoxGender.Text + "','" + cBoxQual.Text + "','" + dteDOB.Text + "','" + dteReg.Text + "','" + path + "');";
I tried everything but cant seem to find what is wrong here. The datatype of fields is Text in DB, & when I execute the query , it gives the error
Your table includes 2 fields whose names are problematic: GRNO:; and Name.
Since GRNO: includes a colon, you can enclose it in square brackets so the db engine will accept it: [GRNO:]
And since Name is a reserved word, enclose that one in square brackets, too.
"INSERT INTO CIT ([GRNO:], [Name], ...
Beyond those field name issues, the standard advice is to use a parameter query for your INSERT. Note you will still need to bracket those problem names in a parameter query.
Also, Access will let you use back-ticks instead of square brackets if you prefer ...
"INSERT INTO CIT (`GRNO:`, `Name`, ...
Try:
string query = "INSERT INTO CIT (GRNO, Name, FName, CNIC, Address, ContactNO, Gender, Qualification, DOB, RegDate, Photo) VALUES ('" + txtGRNO.Text + "','" + txtName.Text + "','" + txtFName.Text + "','1234','" + txtAddress.Text + "','" + txtContact.Text + "','" + cBoxGender.Text + "','" + cBoxQual.Text + "','" + dteDOB.Text + "','" + dteReg.Text + "','" + path + "');";
Remove ; after GRNO field.
So, I'm building a C# application, using .NET and oracle 11g express. I've already connected to the database, but, for some reason, it cannot insert into the database, it keeps giving the ORA 00911 error. This is the code:
private void toolStripButton1_Click(object sender, EventArgs e)
{
string salvar;
dbConnection conn = new dbConnection();
try
{
conn.tryconection();
salvar = "INSERT INTO Client(Name, Document, City, Contact, Addr, District, Zipcode, Phone_1, Phone_2, Cel_1, Cel_2, eymael, tobar) VALUES('" + boxNome.Text + "', '" + boxDocumento.Text + "','" + boxCidade.Text + "','" + boxContato.Text + "','" + boxEndereco.Text + "','" + boxBairro.Text + "','" + boxCep.Text + "','" + boxFone1.Text + "','" + boxFone2.Text + "','" + boxCel1.Text + "','" + boxCel2.Text + "','" + boxEmail.Text + "','" + boxComment.Text + "');";
//MessageBox.Show(salvar);
conn.executaInstrucao(salvar);
//conn.executaInstrucao("commit;");
}
catch (Exception g)
{
MessageBox.Show("Problema na conexão");
}
}
This is the output string with some random values, wich works on SQL Developer and actually adds the row:
INSERT INTO Client(Name, Document, City, Contact, Addr, District, Zipcode, Phone_1, Phone_2, Cel_1, Cel_2, eymael, tobar) VALUES('asdassdsad', '15.465.465/4654-54','654654654','654654654','654654654','654654654','65465-465','(65) 4654-6546','(54) 6546-5465','(46) 54654-6546','(65) 46546-5465','4654654654','65465465465');
Someone help me, please. I have no idea of what is wrong.
PS.: All my columns are VARCHAR2.
ORA 00911 is invalid char problem. If you have ' char in your textboxes, may be it makes problem. Like comment above use SqlCommand.Parameters.AddWithValue like Soner Gönül said parameter
I'm having a bit of trouble with entering data into several columns of a database, all nvarchar types. I'm getting:
The data was truncated while converting from one data type to another. Name of function(if known)
DBConn.Open();
cmd = new SqlCeCommand("INSERT INTO [Employee Table] VALUES ('"+ social + "','" +
first + "','" + last + "','" + mid + "','" + address + "','" + phone + "',"
+ "'Employee'" + ",'" + city + "','" + state + "','" + zip + "','" + email + "','" + userName + "')", DBConn);
cmd.ExecuteNonQuery();
Any suggestions on how to avoid the truncating/converting error?
Your NVARCHAR isn't big enough to hold your string.
try using Parameters
SqlParameter param = new SqlParameter("Field", SqlDbType.NVarChar)
Param.Value = Field;
The reason is that the column's length is very short. So the value is longer than the maximum width of the column of the table.