| private RestoreIndexEvents ( bool forceReset ) : void | ||
| forceReset | bool | |
| 리턴 | void | |
private void MergeTable(DataTable src, DataTable dst)
{
int rowsCount = src.Rows.Count;
bool wasEmpty = dst.Rows.Count == 0;
if (0 < rowsCount)
{
Index? ndxSearch = null;
DataKey key = default(DataKey);
dst.SuspendIndexEvents();
try
{
if (!wasEmpty && dst._primaryKey != null)
{
key = GetSrcKey(src, dst);
if (key.HasValue)
{
ndxSearch = dst._primaryKey.Key.GetSortIndex(DataViewRowState.OriginalRows | DataViewRowState.Added);
}
}
// this improves performance by iterating over the rows instead of computing their position
foreach (DataRow sourceRow in src.Rows)
{
DataRow?targetRow = null;
if (ndxSearch != null)
{
targetRow = dst.FindMergeTarget(sourceRow, key, ndxSearch);
}
dst.MergeRow(sourceRow, targetRow, _preserveChanges, ndxSearch);
}
}
finally
{
dst.RestoreIndexEvents(true);
}
}
MergeExtendedProperties(src.ExtendedProperties, dst.ExtendedProperties);
}
private void MergeTable(DataTable src, DataTable dst)
{
int count = src.Rows.Count;
bool flag = dst.Rows.Count == 0;
if (0 < count)
{
Index ndx = null;
DataKey srcKey = new DataKey();
dst.SuspendIndexEvents();
try
{
if (!flag && (dst.primaryKey != null))
{
srcKey = this.GetSrcKey(src, dst);
if (srcKey.HasValue)
{
ndx = dst.primaryKey.Key.GetSortIndex(DataViewRowState.OriginalRows | DataViewRowState.Added);
}
}
foreach (DataRow row2 in src.Rows)
{
DataRow targetRow = null;
if (ndx != null)
{
targetRow = dst.FindMergeTarget(row2, srcKey, ndx);
}
dst.MergeRow(row2, targetRow, this.preserveChanges, ndx);
}
}
finally
{
dst.RestoreIndexEvents(true);
}
}
this.MergeExtendedProperties(src.ExtendedProperties, dst.ExtendedProperties);
}
private void MergeTable(DataTable src, DataTable dst) {
int rowsCount = src.Rows.Count;
bool wasEmpty = dst.Rows.Count == 0;
if(0 < rowsCount) {
Index ndxSearch = null;
DataKey key = default(DataKey);
dst.SuspendIndexEvents();
try {
if(! wasEmpty && dst.primaryKey != null) {
key = GetSrcKey(src, dst);
if (key.HasValue)
ndxSearch = dst.primaryKey.Key.GetSortIndex(DataViewRowState.OriginalRows | DataViewRowState.Added );
}
// SQLBU 414992: Serious performance issue when calling Merge
// this improves performance by iterating over the rows instead of computing their position
foreach(DataRow sourceRow in src.Rows) {
DataRow targetRow = null;
if(ndxSearch != null) {
targetRow = dst.FindMergeTarget(sourceRow, key, ndxSearch);
}
dst.MergeRow(sourceRow, targetRow, preserveChanges, ndxSearch);
}
}
finally {
dst.RestoreIndexEvents(true);
}
}
MergeExtendedProperties(src.ExtendedProperties, dst.ExtendedProperties);
}
