show image from database to pictureBox

cn.Open();
            SqlCommand cmd = new SqlCommand("SELECT * FROM ImageUpload WHERE ImgID='100'",cn);
            SqlDataReader dr = cmd.ExecuteReader();
            if (dr.Read())
            {
                string image = Convert.ToString(DateTime.Now.ToFileTime());
                byte[] bimage = (byte[])dr["ImgData"];
                FileStream fs = new FileStream(image, FileMode.CreateNew, FileAccess.Write);
                fs.Write(bimage, 0, bimage.Length - 1);
                fs.Close();
                pictureBox1.Image = Image.FromFile(image);
            }
            dr.Close();
            cn.Close();

Posted 26-May-13 21:01pm

Chiklu.Soumya

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Basmeh Awad · Accepted Answer · 2013-05-26T04:26:00

Solution 1

after executing you datareader and gathering data in your datareader object

C#

SqlDataReader dr = callFaceImage.ExecuteReader();
         if (dr.hasrows())
      { 
                dr.Read(); //you were missing this W/o this command you cannot read data
                byte[] Img =(byte[]) dr["faceImage"];
                MemoryStream ms = new MemoryStream(Img);
                pictureBox3.Image = Image.FromStream(ms);
                pictureBox3.Refresh();
       }

Posted 26-May-13 4:26am

Basmeh Awad

Updated 26-May-13 20:46pm

v3

Comments

Meisam Parsa 26-May-13 11:22am

this solution not working

Basmeh Awad 26-May-13 11:26am

what is the error??
what code have you written??
show your code..

Meisam Parsa 27-May-13 2:39am

Error : Invalid attempt to read when no data is present.

save code :

SqlCommand instoReceiveTbl = new SqlCommand("insert into receiveTable (carNo,enterTime,cardNo,faceImage) values (@carNo,@enterTime,@cardNo,@faceImage)", cnn);
instoReceiveTbl.Parameters.AddWithValue("@cardNo",enterCardNo_txtBox.Text);
instoReceiveTbl.Parameters.AddWithValue("@carNo", "ثبت نشده");
instoReceiveTbl.Parameters.AddWithValue("@enterTime", DateTime.Now);
instoReceiveTbl.Parameters.AddWithValue("@faceImage", imageByte);
instoReceiveTbl.ExecuteNonQuery();

Retrieval code :

SqlCommand callFaceImage = new SqlCommand("select faceImage from receiveTable where cardNo = "+ enterCardNo_txtBox.Text,cnn);
SqlDataReader dr = callFaceImage.ExecuteReader();
byte[] Img =(byte[]) dr["faceImage"];
MemoryStream ms = new MemoryStream(Img);
pictureBox3.Image = Image.FromStream(ms);

Basmeh Awad 27-May-13 2:47am

now check the solution... you were missing if condition and this command "dr.Read()"; thats why you were getting that error
Error : Invalid attempt to read when no data is present.

Meisam Parsa 27-May-13 3:04am

thanks buddy ;)

Basmeh Awad 27-May-13 3:06am

welcome:-)

Meisam Parsa 27-May-13 3:31am

error : The string was not recognized as a valid DateTime. There is an unknown word starting at index 0.

save code :

instoReceiveTbl.Parameters.AddWithValue("@enterTime", DateTime.Now);
instoReceiveTbl.ExecuteNonQuery();

Retrieval code :

SqlCommand cmTime = new SqlCommand("select enterTime from receiveTable where cardNo = " + enterCardNo_txtBox.Text, cnn);
SqlDataReader timeDr = cmTime.ExecuteReader();
timeDr.Read();
DateTime enterTime = Convert.ToDateTime(timeDr.ToString());

whats the my problem ?

Basmeh Awad 27-May-13 3:36am

DateTime enterTime = Convert.ToDateTime(timeDr(0).ToString());
check what you were missing and try now

Meisam Parsa 27-May-13 3:46am

error :
'timeDr' is a 'variable' but is used like a 'method'

Basmeh Awad 27-May-13 4:04am

System.DateTime enterTime = Convert.ToDateTime(timeDr(0));
this is the solution and if this wont works...you will have to show your complete code then will have to see what is the mistake in your code...so add it as another question

Meisam Parsa 27-May-13 4:14am

ok

Basmeh Awad 27-May-13 3:35am

...

Meisam Parsa 27-May-13 4:18am

The problem was solved with this code:
SqlCommand cmTime = new SqlCommand("select enterTime from receiveTable where cardNo = " + enterCardNo_txtBox.Text.ToString(), cnn);
SqlDataReader timeDr = cmTime.ExecuteReader();
timeDr.Read();
DateTime enterTime = Convert.ToDateTime(timeDr["enterTime"]);

Basmeh Awad 27-May-13 4:20am

good..but both are the same timeDr["enterTime"] or timeDr[0]...
anyway goodluck carry on