i want to insert some data in access table but it gives me syntax error for my insert into staatements....
so i share my code to you and hope you can help me....
private OleDbConnection conn;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;
`Data Source=D:\\Database3.mdb;Persist Security Info=False");
}`
`private void button1_Click(object sender, EventArgs e)`
{
conn.Open();
string query = "INSERT INTO Table([Kaargah],[Manager])" +
"VALUES('"+textBox1.Text+"','"+textBox2.Text+"')";
OleDbCommand command = new OleDbCommand();
command.CommandText = query;
command.Connection = conn;
command.ExecuteNonQuery();
conn.Close();
MessageBox.Show("دادهها با موفقیت ثبت گردید!");
}
Try to change your table name to anything other than 'Table'. Like this... Some name such as 'Table' are probably reserved. Avoid using such names.
string query = "INSERT INTO Table1([Kaargah],[Manager]) VALUES ('" + textBox1.Text + "','" + textBox2.Text + "')";
well you can write below query it is fine
string query = "INSERT INTO Table1([Kaargah],[Manager]) VALUES('textBox1.Text','textBox2.Text')";
Related
I am seraching varchar2 column "DF_FORM_COMP_VALUE" that includes ID Number with address to retrieve data by searching according to the ID Number only in oracle 11g DB. I built the following code to retrieve the data
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OracleClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
String mycon = "DATA SOURCE=mydatasource/example;USER
ID=user;Password=mypassword;Unicode=True";
String myquery = "Select * From DF_FORM_COMP_VALUE Where VALUE_STR =" +
TextBox1.Text;
OracleConnection con = new OracleConnection(mycon);
OracleCommand cmd = new OracleCommand();
cmd.CommandText = myquery;
cmd.Connection = con;
OracleDataAdapter da = new OracleDataAdapter();
da.SelectCommand = cmd;
DataSet ds = new DataSet();
da.Fill(ds);
if (ds.Tables[0].Rows.Count > 0)
{
Label1.Text = "Particular ID found successfully";
Label2.Text = ds.Tables[0].Rows[0]["ID_TRANSACTION"].ToString();
Label3.Text = ds.Tables[0].Rows[0]["ID_FORM_COMPONENT"].ToString();
Label4.Text = ds.Tables[0].Rows[0]["ID"].ToString();
}
else
{
Label1.Text = "ID Not Found - Please Serach Again";
Label2.Text = "";
Label3.Text = "";
Label4.Text = "";
}
con.Close();
}
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
}
}
it keeps throwing Error ORA-01722: invalid number! Can someone help please
I'm assuming TextBox1.Text is some sort of input from the user on a web page somewhere? If the contents of that variable are "x", you're going to wind up with this query:
Select * From DF_FORM_COMP_VALUE Where VALUE_STR = x
That's not going to work because you need the string "x", but here it looks like a variable.
You probably want this line to look like:
String myquery = "Select * From DF_FORM_COMP_VALUE Where VALUE_STR = '" +
TextBox1.Text + "'";
THIS IS A VERY BAD IDEA. DO NOT DO THIS.
You need to read up on SQL Injection. Never put unsafe, user-specified text directly into a SQL query. Doing so will make your application trivially hackable.
I'm not sure what you're using to connect to Oracle, but you want to create a parameterized query and put the user input as a bind variable. One example on doing that is here. So you really want your query to look like this:
String myquery = "Select * From DF_FORM_COMP_VALUE Where VALUE_STR = :myinput"
Then you bind TextBox1.Text to :myinput, depending on what you're using to access Oracle. This is also more efficient if you run the query multiple times, because your query will not need to be hard parsed each time it is executed.
I'm trying to change my column datatype in the table item. Now it has just 0(it's int now). What will happen when I run it? I tried to use int num = cmd.ExecuteNonQuery() but didn't work, it came an error. With this code I don't see changes. I found that LONGBLOB is the particular datatype for saving images in the database. This is my code:
public partial class alterOneSec : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
OleDbConnection con = DAL.GetConnection();
con.Open();
if(con.State == ConnectionState.Open)
{
string sql = "ALTER TABLE item ALTER COLUMN picture LONGBLOB NOT NULL";
OleDbCommand cmd = DAL.GetCommand(con, sql);
}
con.Close();
Response.Redirect("homepage.aspx?err=case3");
}
}
The GetCommand method is this:
public static OleDbCommand GetCommand(OleDbConnection con, string sql)
{
OleDbCommand cmd = new OleDbCommand();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;
cmd.CommandText = sql;
return cmd;
}
I have a Problem with DataAdapter Update method :
this is insert code for each row:
private void btnInsert_Click(object sender, EventArgs e)
{
dtTESTDB = dsTESTDB.Tables["dstblTESTDB"];
drTblTESTDB = dtTESTDB.NewRow();
drTblTESTDB.BeginEdit();
drTblTESTDB["ID"] = txtID.Text;
drTblTESTDB["Name"] = txtName.Text;
drTblTESTDB["Family"] = txtFamily.Text;
dtTESTDB.Rows.Add(drTblTESTDB);
dtTESTDB = dsTESTDB.Tables[0].GetChanges(DataRowState.Added);
dtlAdd = dtTESTDB;
drTblTESTDB.EndEdit();
cmd.Parameters.AddWithValue("#ID", int.Parse(txtID.Text));
cmd.Parameters.AddWithValue("#Name", txtName.Text);
cmd.Parameters.AddWithValue("#Family", txtFamily.Text);
cmd.CommandType = CommandType.Text;
cmd.Connection = SQLConnection;
cmd.CommandText = "insert into tblTESTDB
(ID,Name,Family) values (#ID,#Name,#Family)";
cmd.UpdatedRowSource = UpdateRowSource.None;
da.InsertCommand = cmd;
}
now,I want update database after insert multiple rows with :
private void btnSynchronize_Click(object sender, EventArgs e)
{
try
{
da.UpdateBatchSize = 0;// dttblAdd.Rows.Count;
da.Update(dtlAdd);
dsTESTDB.AcceptChanges();
}
catch (SqlException sqlEX)
{
MessageBox.Show(sqlEX.ToString());
}
catch (System.Exception EX)
{
MessageBox.Show(EX.ToString());
}
}
this code work by one row insert without Error ,but if insert two or more record (rows) at a time , DataAdapter insert only last row into DATABASE and throw Exception.
why ?
(sorry - I can't Speak or Writing English very well)
UpdateBatchSize = 0 may be the problem. You need to set it to those many rows as the row count.
I'm tired of searching for a solution. please help me.
I have a table with columns
p_id (int)
p_name (varchar50)
category (int)
price (money)
picture (Image)
Insertion process works perfectly, it is also showing me my database records.. but it sow me my filepath in gridview rather than show image...
Please help me... it is part of my project... and I don't know how to show retrieve image from database in Datagridview
I have done all my SQL connection work in Dall Class
Here is my code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Image_task
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void insert_btn_Click(object sender, EventArgs e)
{
try
{
int count;
dall insert = new dall();
int id = Convert.ToInt32(id_txt.Text);
string name = name_txt.Text;
int cat = Convert.ToInt32(cat_txt.Text);
decimal price = Convert.ToDecimal(price_txt.Text);
string image=pic_txt.Text;
count = insert.insrt_up_del("insert into product values('" + id + "','" + name + "','" + cat + "','" + price + "','" + image + "')");
MessageBox.Show("Insert Successfully", "Successfull", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Form1_Load(object sender, EventArgs e)
{
insert_btn.Enabled=false;
}
private void browse_txt_Click(object sender, EventArgs e)
{
insert_btn.Enabled = true;
openFileDialog1.Filter = "Images (*.BMP;*.JPG;*.GIF,*.PNG,*.TIFF)|*.BMP;*.JPG;*.GIF;*.PNG;*.TIFF|" + "All files (*.*)|*.*";
if (openFileDialog1.ShowDialog()==DialogResult.OK)
{
pictureBox1.Image = new Bitmap(openFileDialog1.FileName);
pic_txt.Text = openFileDialog1.FileName;
}
}
private void search_btn_Click(object sender, EventArgs e)
{
dall select = new dall();
DataTable dt = new DataTable();
dt = select.select("Select * from product");
dataGridView1.DataSource = dt;
//DataGridViewImageColumn img = new DataGridViewImageColumn();
//img.DataPropertyName = "Picture";
//img.Width = 200;
//img.HeaderText = "Picture Column";
//img.ReadOnly = true;
//img.ImageLayout = DataGridViewImageCellLayout.Normal;
//dataGridView1.Columns.Add(img);
//dataGridView1.DataSource = new BindingSource(dt,null);
}
}
}
use data adapter
DataAdapter da = new DataAdapter("Select * from product",youconnection);
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
Here is my code i want to load a progress bar while dataset filling and data importing in a datagridview.Plz Help me
private void btnLoad_Click(object sender, EventArgs e)
{
string str="select Cert_ID,Card_Number,Name,DOB,Mobile,Gender,Relation ";
str = str + " from dbo.beneficiary";
SqlConnection conn = null;
SqlDataAdapter sqlda = null;
DataSet res = new DataSet();
DataTable dt = new DataTable();
try
{
_connectionString = "xyz.........";
conn = new SqlConnection(_connectionString);
conn.Open();
SqlCommand command = new SqlCommand(str, conn);
sqlda = new SqlDataAdapter(command);
sqlda.Fill(res);
dataGridView1.DataSource=res.Tables[0];
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
conn.Close();
}
}