how to fix this code ? error must declare the scalar variable "@TxtId".

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this is the code :

C#

{
               using (SqlConnection connection = CreateConnection())
               using (SqlCommand command = new SqlCommand("Delete Movies WHERE Id_Movies = @TxtId.text", connection))
               {
                   command.Parameters.AddWithValue("@Name", TxtName.Text);
                   command.Parameters.AddWithValue("@Director", TxtDirector.Text);
                   command.Parameters.AddWithValue("@Year", TxtYear.Text);
                   command.Parameters.AddWithValue("@Type", TxtType.Text);
                   command.Parameters.AddWithValue("@Id", TxtId.Text);

                   try
                   {
                       connection.Open();
                       command.ExecuteNonQuery();

                       MessageBox.Show("Deleted successfully.");
                       Clear();
                   }
                   catch (SqlException ex)
                   {
                       MessageBox.Show(ex.Message);
                       
                   }
               }
           }

when i debug software and click on delete button it say's must declare the scalar variable "@TxtId".

how to fix it ?

Posted 22-Jul-15 18:04pm

brandon1999

Updated 22-Jul-15 18:59pm

Suvendu Shekhar Giri

v2

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Comments

V Senthil Kumar 23-Jul-15 0:30am

can you try where Id_Movies='"+txtid.Text+"',con

brandon1999 23-Jul-15 0:39am

i try that but get error alot.

3 solutions

Solution 2

C#

using (SqlConnection connection = CreateConnection())
using (SqlCommand command = new SqlCommand("Delete from Movies WHERE Id_Movies = @Id", connection))
{
   command.Parameters.AddWithValue("@Id", TxtId.Text);
   connection.Open();
   command.ExecuteNonQuery();
}

delete sql syntax is

SQL

DELETE FROM table_name
WHERE some_column=some_value;

And also give correct parameter name.

Posted 22-Jul-15 19:08pm

DamithSL

Solution 3

Hi Try to pass like this

VB

using (SqlCommand command = new SqlCommand("Delete Movies WHERE Id_Movies = @Id", connection))

instead of @TxtId.text

Regards
Aravind

Posted 22-Jul-15 19:10pm

Aravindba

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Suvendu Shekhar Giri · Accepted Answer · 2015-07-22T19:01:00

Solution 1

You have assigned wrong variable for one of the parameter. Try this-

C#

using (SqlCommand command = new SqlCommand("Delete Movies WHERE Id_Movies = @Id", connection))
{

Note: Make sure that you are passing a valid value in the element TxtId

Hope, it helps :)

Posted 22-Jul-15 19:01pm

Suvendu Shekhar Giri

Updated 22-Jul-15 19:03pm

v2

Comments

brandon1999 23-Jul-15 1:12am

that is work . thank you so much.