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David Smith
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C# MS Access Setting last using Last Inserted ID as parentID
Jan 11 2013 4:42 AM
What is the best way to do this logic. Basically I creating a series of color events, the first record inserted or created of the color events
transaction is the parent id. After retrieving the last inserted id from the first inserted record, i wanted to set as the parent id.
What is the best way to design this logic. Do I have recall an update query to store parentID query for the parent color record.I am going to demostrate below what I am trying to accomplish. How to right an sql query to take care of this in one step to set the get and set the parent id.
I am using Access 2007
ColorEventTable
ID COLOR ParentID
1 Red 1
2 Blue 1
3 Green 1
4 Black 1
Method I am using below
public static bool Insert_CreateColorEvent(int Color,int ParentID)
{
string sql = "INSERT INTO tblService " +
"(Color, ParentID ) " +
"VALUES (?, ?) ";
using (OleDbConnection sqlConnection = new OleDbConnection(Properties.Settings.Default.colorConnectionString))
{
sqlConnection.Open();
OleDbDataAdapter sqlCommandAdapter = new OleDbDataAdapter();
using (OleDbCommand sqlCommand = new OleDbCommand(sql, sqlConnection))
{
if (Color!= null)
{
sqlCommand.Parameters.AddWithValue("Color", Color);
}
else
{
sqlCommand.Parameters.AddWithValue("Color", DBNull.Value);
}
if (ParentID > 0)
{
sqlCommand.Parameters.AddWithValue("ParentID", ParentID);
}
else
{
sqlCommand.Parameters.AddWithValue("ParentID", DBNull.Value);
}
sqlCommandAdapter.InsertCommand = sqlCommand;
int rowsAffected = 0;
if ((rowsAffected = sqlCommandAdapter.InsertCommand.ExecuteNonQuery()) > 0)
{
sqlCommand.CommandText = "Select @@Identity";
int ID = (int)sqlCommand.ExecuteScalar();
if (ID > 0)
{
if (DataAccess.IsParentIDValidated)
{
DataAccess.IsParentIDValidated = false;
DataAccess.ParentID = ID;
}
DataAccess.LastInsertedId = ID;
}
}
}
}
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