Vb.net 4 textbox 1 datagridview 1 save button how inert value in sqldatabase

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i am trying vb.net sales module that module 4 textbox value add in 1 datagridview 4 column value , another 4 textbox value insert in sql database single data table 8 column value.but value not insert how to solve the problam

What I have tried:

con.Open()
com.CommandText = "insert into three(sid,supid,supname,supperson) values((@sid,@supid,@supname,@supperson)"
com.Parameters.AddWithValue("@sid", TextBox1.Text)
com.Parameters.AddWithValue("@supid", TextBox2.Text)
com.Parameters.AddWithValue("@supname", TextBox3.Text)
com.Parameters.AddWithValue("@supperson", TextBox4.Text)
For i As Integer = 0 To DataGridView1.Rows.Count - 1
com.CommandText = "insert into three(pno,pname,qty,price) values((@pno,@pname,@qty,@price)"
com.Parameters.AddWithValue("@pno", DataGridView1.Rows(i).Cells(0).Value)
com.Parameters.AddWithValue("@pname", DataGridView1.Rows(i).Cells(1).Value)
com.Parameters.AddWithValue("@qty", DataGridView1.Rows(i).Cells(2).Value)
com.Parameters.AddWithValue("@price", DataGridView1.Rows(i).Cells(3).Value)
com.ExecuteNonQuery()
Next
connection.Close(

Posted 2-Apr-18 3:52am

manirangasamy78

Updated 2-Apr-18 5:39am

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manirangasamy78 4-Apr-18 9:44am

I am trying this code but i am get this error

(An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll

Additional information: Incorrect syntax near ',')

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Wendelius · Answer 1 · 2018-04-02T04:16:00

I answered the exact same question earlier here: Vb.net 4 textbox 1 datagridview 1 save button how inert value in sqldatabase[^] .

Based on the post you have not tried the suggested actions. So have a try with something like the following. I don't have a compiler at hand so sorry for any typos

con.Open()
com.CommandText = "insert into three(sid,supid,supname,supperson) values(@sid,@supid,@supname,@supperson)"
com.Parameters.AddWithValue("@sid", TextBox1.Text)
com.Parameters.AddWithValue("@supid", TextBox2.Text)
com.Parameters.AddWithValue("@supname", TextBox3.Text)
com.Parameters.AddWithValue("@supperson", TextBox4.Text)
com.ExecuteNonQuery()

com.CommandText = "insert into three (pno,pname,qty,price) values (@pno,@pname,@qty,@price)"
com.Parameters.Add("@pno", SqlDbType.VarChar, 100)
com.Parameters.Add("@pname", SqlDbType.VarChar, 100)
com.Parameters.Add("@qty", SqlDbType.VarChar, 100)
com.Parameters.Add("@price", SqlDbType.VarChar, 100)
For i As Integer = 0 To DataGridView1.Rows.Count - 1
   com.Parameters("@pno").Value = DataGridView1.Rows(i).Cells(0).Value
   com.Parameters("@pname".Value = DataGridView1.Rows(i).Cells(1).Value
   com.Parameters("@qty".Value = DataGridView1.Rows(i).Cells(2).Value
   com.Parameters("@price".Value = DataGridView1.Rows(i).Cells(3).Value
   com.ExecuteNonQuery()
Next
connection.Close(

All the questions in the previous answer still apply and check the data type and lengths prior using this code. For example I do not know if the type of PNO is varchar or something else.