How Do I Sql Sum Get To Label C#

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VS2012

SQL-Server-2012

Dear friends,

I need to print below sql sum into c# windows form application. here is the code i was using for this. but i'm getting an error.

SQL Query as fallows. this one is working

SQL

SELECT SUM (COUNT)  FROM  Count_EPF WHERE date = '6/17/2015'>

conversion failed when converting datetime from character string

hear is my code

C#

string query = "SELECT SUM (COUNT)  FROM  Count_EPF WHERE date = '@C' ";

                using (SqlCommand cmd = new SqlCommand(query, conn))
                {
                    cmd.Parameters.AddWithValue("@C", dateTimePicker1.Text);

                    cmd.ExecuteNonQuery();
                    object result = cmd.ExecuteScalar();
                    txtView.Text = Convert.ToString(result);

Posted 15-Jun-15 23:15pm

Neranjana pathirana

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OriginalGriff · Accepted Answer · 2015-06-15T23:34:00

Remove the quotes:

SQL

string query = "SELECT SUM (COUNT)  FROM  Count_EPF WHERE date = '@C' ";

Becomes:

SQL

string query = "SELECT SUM (COUNT)  FROM  Count_EPF WHERE date = @C ";

Otherwise the parameter name is within an SQL string and is not treated as a parameter at all.

[edit]
Oh, and don't pass the string - pass the DateTime, value directly:

C#

cmd.Parameters.AddWithValue("@C", dateTimePicker1.Value);

That way, SQL doesn't have to interpret the string into a date with all the possible misinterpretations that can cause.
[/edit]