InvalidOperationException が発生し続けます (「変更された行を含む DataRow コレクションが渡された場合、Update には有効な UpdateCommand が必要です」)。更新コマンドの何が問題なのかわかりません。
これまでのコードは次のとおりです。
OleDbConnection connection;
OleDbDataAdapter clientsAdapter new OleDbDataAdapter();
DataSet myDataSet = new DataSet();
public void Setup()
{
connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=Clients.xlsx;Extended Properties=""Excel 12.0 Xml;HDR=YES"";";
connection = new OleDbConnection(connectionString);
connection.Open();
// SQL
clientsAdapter.SelectCommand = new OleDbCommand("SELECT * FROM [Clients$]", connection);
OleDbCommand updateCmd = new OleDbCommand(
"UPDATE [Clients$] " +
"SET " +
"[Family Name] = ?, " +
"[Given Name] = ?, " +
"Address = ?, " +
"[Home Phone] = ?, " +
"[Work Phone] = ?, " +
"[Mobile Phone] = ?, " +
"Email = ?, " +
"Status = ?, " +
"Comments = ? " +
"WHERE " +
"[Last Name] = ? AND " +
"[First Name] = ?"
// SET clause
updateCmd.Parameters.Add("Family Name", OleDbType.Char, 100, "Family Name");
updateCmd.Parameters.Add("Given Name", OleDbType.Char, 100, "Given Name");
updateCmd.Parameters.Add("Address", OleDbType.Char, 100, "Address");
updateCmd.Parameters.Add("Home Phone", OleDbType.Double, 100, "Home Phone");
updateCmd.Parameters.Add("Work Phone", OleDbType.Char, 100, "Work Phone");
updateCmd.Parameters.Add("Mobile Phone", OleDbType.Char, 100, "Mobile Phone");
updateCmd.Parameters.Add("Email", OleDbType.Char, 100, "Email");
updateCmd.Parameters.Add("Status", OleDbType.Char, 100, "Status");
updateCmd.Parameters.Add("Comments", OleDbType.Char, 100, "Comments");
// WHERE clause
OleDbParameter fName = updateCmd.Parameters.Add("Old Family Name", OleDbType.Char, 100, "Family Name");
fName.SourceVersion = DataRowVersion.Original;
OleDbParameter lName = updateCmd.Parameters.Add("Old Given Name", OleDbType.Char, 100, "Given Name");
lName.SourceVersion = DataRowVersion.Original;
clientsAdapter.InsertCommand = updateCmd;
// create table and fill
DataTable clients = new DataTable("Clients");
clientsAdapter.Fill(clients);
myDataSet.Tables.Add(clients);
connection.Close();
}
public void UpdateDb()
{
connection.Open();
clientsAdapter.Update(myDataSet, "Clients"); // errer occurs here
connection.Close();
}
Google には簡単な例がいくつかありますが、解決策を見つけることができませんでした。