fetch specific column from sql database and saving value in variable in asp.net c#
0
Hi all i am trying to get data of a specific column from my database and then use that data to subtract.. but i am getting an error that input string is not in a correct format.
I have tried almost every thing that i know but nothing is working can any one help me??
my code -
string t_qty = "";
SqlCommand cmd1 = new SqlCommand("select QTY from STOCK_ARRIVE where BARCODE = @barcode", d.con);
cmd1.Parameters.AddWithValue("@barcode", txt_barcode.Text);
d.con.Open();
SqlDataReader dr = cmd1.ExecuteReader();
while (dr.Read())
{
t_qty = dr["QTY"].ToString();
}
d.con.Close();
try
{
int less = 0;
less = int.Parse(t_qty) - int.Parse(txt_qty.Text);
SqlCommand cmd2 = new SqlCommand("update STOCK_ARRIVE set QTY=@pq where BARCODE=@barcode AND S_VC=@vc", d.con);
cmd2.Parameters.AddWithValue("@pq", less);
cmd2.Parameters.AddWithValue("@barcode", txt_barcode.Text);
cmd2.Parameters.AddWithValue("@vc", txt_vc.Text);
d.con.Open();
cmd2.ExecuteNonQuery();
d.con.Close();
}
catch (Exception ex)
{
Response.Write(ex);
}
Response.Write("<script>alert('Data has been saved')</script>");
c# asp.net
sql-server edited Nov 15 '18 at 9:38
sidprasher
2,42211530
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
add a comment |
0
Hi all i am trying to get data of a specific column from my database and then use that data to subtract.. but i am getting an error that input string is not in a correct format.
I have tried almost every thing that i know but nothing is working can any one help me??
my code -
string t_qty = "";
SqlCommand cmd1 = new SqlCommand("select QTY from STOCK_ARRIVE where BARCODE = @barcode", d.con);
cmd1.Parameters.AddWithValue("@barcode", txt_barcode.Text);
d.con.Open();
SqlDataReader dr = cmd1.ExecuteReader();
while (dr.Read())
{
t_qty = dr["QTY"].ToString();
}
d.con.Close();
try
{
int less = 0;
less = int.Parse(t_qty) - int.Parse(txt_qty.Text);
SqlCommand cmd2 = new SqlCommand("update STOCK_ARRIVE set QTY=@pq where BARCODE=@barcode AND S_VC=@vc", d.con);
cmd2.Parameters.AddWithValue("@pq", less);
cmd2.Parameters.AddWithValue("@barcode", txt_barcode.Text);
cmd2.Parameters.AddWithValue("@vc", txt_vc.Text);
d.con.Open();
cmd2.ExecuteNonQuery();
d.con.Close();
}
catch (Exception ex)
{
Response.Write(ex);
}
Response.Write("<script>alert('Data has been saved')</script>");
c# asp.net
sql-server edited Nov 15 '18 at 9:38
sidprasher
2,42211530
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
Please check botht_qtyandtxt_qty.Text, probably there's something which is not convertible to integer.
– Tetsuya Yamamoto
Nov 15 '18 at 9:13
What is the data type of the columnQTYin the database Is itint? Why are you using a string to store it? Also what is the data type forSTOCK_ARRIVE?
– sidprasher
Nov 15 '18 at 9:27
STOCK_ARRIVE is the name of table from which QTY is coming and yes datatype of QTY is int in database.
– Hamza Dati
Nov 15 '18 at 9:59
add a comment |
0
0
0
Hi all i am trying to get data of a specific column from my database and then use that data to subtract.. but i am getting an error that input string is not in a correct format.
I have tried almost every thing that i know but nothing is working can any one help me??
my code -
string t_qty = "";
SqlCommand cmd1 = new SqlCommand("select QTY from STOCK_ARRIVE where BARCODE = @barcode", d.con);
cmd1.Parameters.AddWithValue("@barcode", txt_barcode.Text);
d.con.Open();
SqlDataReader dr = cmd1.ExecuteReader();
while (dr.Read())
{
t_qty = dr["QTY"].ToString();
}
d.con.Close();
try
{
int less = 0;
less = int.Parse(t_qty) - int.Parse(txt_qty.Text);
SqlCommand cmd2 = new SqlCommand("update STOCK_ARRIVE set QTY=@pq where BARCODE=@barcode AND S_VC=@vc", d.con);
cmd2.Parameters.AddWithValue("@pq", less);
cmd2.Parameters.AddWithValue("@barcode", txt_barcode.Text);
cmd2.Parameters.AddWithValue("@vc", txt_vc.Text);
d.con.Open();
cmd2.ExecuteNonQuery();
d.con.Close();
}
catch (Exception ex)
{
Response.Write(ex);
}
Response.Write("<script>alert('Data has been saved')</script>");
c# asp.net
sql-server edited Nov 15 '18 at 9:38
sidprasher
2,42211530
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
Hi all i am trying to get data of a specific column from my database and then use that data to subtract.. but i am getting an error that input string is not in a correct format.
I have tried almost every thing that i know but nothing is working can any one help me??
my code -
string t_qty = "";
SqlCommand cmd1 = new SqlCommand("select QTY from STOCK_ARRIVE where BARCODE = @barcode", d.con);
cmd1.Parameters.AddWithValue("@barcode", txt_barcode.Text);
d.con.Open();
SqlDataReader dr = cmd1.ExecuteReader();
while (dr.Read())
{
t_qty = dr["QTY"].ToString();
}
d.con.Close();
try
{
int less = 0;
less = int.Parse(t_qty) - int.Parse(txt_qty.Text);
SqlCommand cmd2 = new SqlCommand("update STOCK_ARRIVE set QTY=@pq where BARCODE=@barcode AND S_VC=@vc", d.con);
cmd2.Parameters.AddWithValue("@pq", less);
cmd2.Parameters.AddWithValue("@barcode", txt_barcode.Text);
cmd2.Parameters.AddWithValue("@vc", txt_vc.Text);
d.con.Open();
cmd2.ExecuteNonQuery();
d.con.Close();
}
catch (Exception ex)
{
Response.Write(ex);
}
Response.Write("<script>alert('Data has been saved')</script>");
c# asp.net
sql-server c# asp.net
sql-server edited Nov 15 '18 at 9:38
sidprasher
2,42211530
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
edited Nov 15 '18 at 9:38
sidprasher
2,42211530
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
edited Nov 15 '18 at 9:38
sidprasher
2,42211530
edited Nov 15 '18 at 9:38
sidprasher
2,42211530
edited Nov 15 '18 at 9:38
sidprasher
2,42211530
2,42211530
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
asked Nov 15 '18 at 9:09
Hamza DatiHamza Dati
1
1
Please check botht_qtyandtxt_qty.Text, probably there's something which is not convertible to integer.
– Tetsuya Yamamoto
Nov 15 '18 at 9:13
What is the data type of the columnQTYin the database Is itint? Why are you using a string to store it? Also what is the data type forSTOCK_ARRIVE?
– sidprasher
Nov 15 '18 at 9:27
STOCK_ARRIVE is the name of table from which QTY is coming and yes datatype of QTY is int in database.
– Hamza Dati
Nov 15 '18 at 9:59
add a comment |
Please check botht_qtyandtxt_qty.Text, probably there's something which is not convertible to integer.
– Tetsuya Yamamoto
Nov 15 '18 at 9:13
What is the data type of the columnQTYin the database Is itint? Why are you using a string to store it? Also what is the data type forSTOCK_ARRIVE?
– sidprasher
Nov 15 '18 at 9:27
STOCK_ARRIVE is the name of table from which QTY is coming and yes datatype of QTY is int in database.
– Hamza Dati
Nov 15 '18 at 9:59
Please check both
t_qty and txt_qty.Text, probably there's something which is not convertible to integer.– Tetsuya Yamamoto
Nov 15 '18 at 9:13
Please check both
t_qty and txt_qty.Text, probably there's something which is not convertible to integer.– Tetsuya Yamamoto
Nov 15 '18 at 9:13
What is the data type of the column
QTY in the database Is it int? Why are you using a string to store it? Also what is the data type for STOCK_ARRIVE ?– sidprasher
Nov 15 '18 at 9:27
What is the data type of the column
QTY in the database Is it int? Why are you using a string to store it? Also what is the data type for STOCK_ARRIVE ?– sidprasher
Nov 15 '18 at 9:27
STOCK_ARRIVE is the name of table from which QTY is coming and yes datatype of QTY is int in database.
– Hamza Dati
Nov 15 '18 at 9:59
STOCK_ARRIVE is the name of table from which QTY is coming and yes datatype of QTY is int in database.
– Hamza Dati
Nov 15 '18 at 9:59
add a comment |
1 Answer
1
active
oldest
votes
0
Most probably your cnversion int.Parse(t_qty) is failing. Instead try using TryParse() like
int.TryParse(t_qty, out int quanrtity)
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Most probably your cnversion int.Parse(t_qty) is failing. Instead try using TryParse() like
int.TryParse(t_qty, out int quanrtity)
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
add a comment |
0
Most probably your cnversion int.Parse(t_qty) is failing. Instead try using TryParse() like
int.TryParse(t_qty, out int quanrtity)
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
add a comment |
0
0
0
Most probably your cnversion int.Parse(t_qty) is failing. Instead try using TryParse() like
int.TryParse(t_qty, out int quanrtity)
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
Most probably your cnversion int.Parse(t_qty) is failing. Instead try using TryParse() like
int.TryParse(t_qty, out int quanrtity)
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
answered Nov 15 '18 at 9:18
RahulRahul
62k124481
62k124481
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
add a comment |
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
@barcode is not getting the value from txt_barcode.text.
– Hamza Dati
Nov 15 '18 at 10:04
add a comment |
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Please check both
t_qtyandtxt_qty.Text, probably there's something which is not convertible to integer.– Tetsuya Yamamoto
Nov 15 '18 at 9:13
What is the data type of the column
QTYin the database Is itint? Why are you using a string to store it? Also what is the data type forSTOCK_ARRIVE?– sidprasher
Nov 15 '18 at 9:27
STOCK_ARRIVE is the name of table from which QTY is coming and yes datatype of QTY is int in database.
– Hamza Dati
Nov 15 '18 at 9:59