Reputation: 303
I'm using .Net Compact 3.5 Windows 7 CE.
I have an application with about 50 users, I have it setup so that I would get an email every time a database transaction failed, with the query.
Every so often I would get an email with a stack trace that starts like this:
System.ArgumentException: Value does not fall within the expected range.
at System.Data.SqlClient.SqlParameterCollection.Validate(Int32 index, SqlParameter value)
at System.Data.SqlClient.SqlParameterCollection.AddWithoutEvents(SqlParameter value)
at System.Data.SqlClient.SqlParameterCollection.Add(SqlParameter value)
at MedWMS.Database.startSqlConnection(String query, SqlParameter[] parameters, SqlConnection connection, SqlCommand cmd)
at MedWMS.Database.<>c__DisplayClasse.b__8()
at MedWMS.Database.retry(Action action)
at MedWMS.Database.executeNonQuery(String query, SqlParameter[] parameters, String connectionString)...
The SQL query which causes this issue is not always the same. I run the same query seconds after I get the email in SQL Server Management Studio with no issues.
I would like to know why this could be happening. This is my first question on SO so please let me know if I'm doing something wrong. I would be happy to answer any questions to provide more detail.
This is a sample of the code that would cause this error:
SqlParameter[] parameters = new SqlParameter[1];
parameters[0] = new SqlParameter("@salesOrder", this.salesOrderNumber);
string query = @"
Select InvTermsOverride from SorMaster where SalesOrder = Convert(int, @salesOrder) and InvTermsOverride = '07' --07 is for COD";
DataTable dt = Database.executeSelectQuery(query, parameters, Country.getCurrent().getSysproConnectionStrReportServer());
This is the query that actually gets passed:
Select InvTermsOverride from SorMaster where SalesOrder = Convert(int, '000000001138325') and InvTermsOverride = '07' --07 is for COD
Here is the relevant methods from the Database
class:
public static DataTable executeSelectQuery(String query, SqlParameter[] parameters, string connectionString)
{
DataTable dt = new DataTable();
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = null;
try
{
retry(() =>
{
cmd = startSqlConnection(query, parameters, connection, cmd);
using (SqlDataReader reader = cmd.ExecuteReader())
{
dt.Load(reader);
}
});
}
catch (Exception ex)
{
onDbConnectionCatch(cmd, ex);
}
finally
{
cmd.Dispose();
connection.Close();
}
}
return dt;
}
public static void executeNonQuery(String query, SqlParameter[] parameters, string connectionString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = null;
try
{
retry(() =>
{
cmd = startSqlConnection(query, parameters, connection, cmd);
cmd.ExecuteNonQuery();
});
}
catch (Exception ex)
{
onDbConnectionCatch(cmd, ex);
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}
private static void retry(Action action)
{
int retryCount = 3;
int retryInterval = 1000;
Exception lastException = null;
for (int retry = 0; retry < retryCount; retry++)
{
try
{
if (retry > 0)
System.Threading.Thread.Sleep(retryInterval);
action();
lastException = null;
return;
}
catch (Exception ex)
{
lastException = ex;
}
}
if (lastException != null)
{
throw lastException;
}
}
private static SqlCommand startSqlConnection(String query, SqlParameter[] parameters, SqlConnection connection, SqlCommand cmd)
{
if (connection.State != ConnectionState.Open)
{
connection.Open();
}
cmd = new SqlCommand(query, connection);
if (parameters != null)
{
foreach (SqlParameter sp in parameters)
{
if (sp != null)
{
cmd.Parameters.Add(sp);
}
}
}
return cmd;
}
private static void onDbConnectionCatch(SqlCommand cmd, Exception ex)
{
try
{
new BigButtonMessageBox("", "Unable connect to database").ShowDialog();
sendEmailWithSqlQuery(cmd, ex);
}
catch
{
}
}
private static void sendEmailWithSqlQuery(SqlCommand cmd, Exception ex)
{
string query2 = "cmd was null";
if (cmd != null)
{
query2 = cmd.CommandText;
foreach (SqlParameter p in cmd.Parameters)
{
query2 = query2.Replace(p.ParameterName, "'" + p.Value.ToString() + "'");
}
}
InternetTools.sendEmail("DB ERROR", ex.ToString() + "\r\n" + query2);
}
Upvotes: 3
Views: 3661
Reputation: 303
I had the same issue as Can't solve "Sqlparameter is already contained by another SqlparameterCollection"
For some reason SQL CE has a different error.
Because of my retry method, I couldn't reuse the SqlParameter object, still not sure why it's not allowed
Anyways I changed
cmd.Parameters.Add(sp);
to
cmd.Parameters.Add(sp.ParameterName, sp.Value);
Upvotes: 0