public void GetUpdateInfo()
{
Updates = new List <UpdateInfo>();
foreach (string tableName in TableNames)
{
using (var cn = VoteDb.GetOpenConnection())
{
DataTable table = new DataTable("ColumnList");
var command = VoteDb.GetCommand("SHOW COLUMNS FROM " + tableName, cn);
var adapter = VoteDb.GetDataAdapter(command);
adapter.Fill(table);
foreach (DataRow row in table.Rows)
{
string columnName = row[0] as string;
if (PoliticianKeyColumns.Contains(columnName))
{
Updates.Add(
new UpdateInfo()
{
TableName = tableName,
ColumnName = columnName
});
}
}
}
}
AppendStatusText("Found {0} updateable columns", Updates.Count);
}
private void FixButton_Click(object sender, EventArgs e)
{
AppendStatusText(string.Empty);
foreach (UpdateInfo updateInfo in Updates)
{
// This could be better done with a single update statement
string sqlText =
"SELECT " + updateInfo.ColumnName +
" FROM " + updateInfo.TableName +
" WHERE " + updateInfo.ColumnName + "=@OriginalKey";
using (var cn = VoteDb.GetOpenConnection())
{
DataTable table = new DataTable("Updates");
var command = VoteDb.GetCommand(sqlText, cn);
VoteDb.AddCommandParameter(command, "OriginalKey", OriginalKeyTextBox.Text);
var adapter = VoteDb.GetDataAdapter(command);
adapter.Fill(table);
AppendStatusText("Table {0}, Column {1}, Found {2}",
updateInfo.TableName, updateInfo.ColumnName, table.Rows.Count);
if (table.Rows.Count > 0)
{
var builder = VoteDb.GetCommandBuilder(adapter);
foreach (DataRow row in table.Rows)
{
row[updateInfo.ColumnName] = NewKeyTextBox.Text;
}
adapter.Update(table);
}
}
}
}
public void GetTableInfo()
{
TableNames = new List <String>();
using (var cn = VoteDb.GetOpenConnection())
{
DataTable table = new DataTable("TableList");
var command = VoteDb.GetCommand("SHOW FULL TABLES", cn);
var adapter = VoteDb.GetDataAdapter(command);
adapter.Fill(table);
foreach (DataRow row in table.Rows)
{
string tableName = row[0] as string;
if ((row[1] as string) != "VIEW" && !ExcludeTables.Contains(tableName))
{
TableNames.Add(tableName);
}
}
}
AppendStatusText("Found {0} tables", TableNames.Count);
}
