private void btnDatasetModify_Click(object sender, EventArgs e)
{
tblFilesTableAdapters.tblFilesTableAdapter ta = new tblFilesTableAdapters.tblFilesTableAdapter();
tblFiles.tblFilesDataTable ds = tblFiles._tblFiles;
ta.Fill(ds);
dsDatasetModify_1(ds, "File");
dsDatasetModify_2(ds, "File");
do_loop(ds);
DataRow[] aa = CreateIndex_1g(ds);
aa = CreateIndex_2g(ds);
AddRecords(ds);
DataView view = new DataView(ds, "", "PathID,fSize", DataViewRowState.CurrentRows);
for (int n = 0; n < 100; ++n)
{
foo(Find_2g(view), view);
}
MessageBox.Show("Done");
}
private void AddRecords(tblFiles.tblFilesDataTable ds)
{
for (int n = 0; n < 20000; ++n)
{
tblFiles.tblFilesRow aa = ds.NewtblFilesRow();
aa.FileID = n;
aa.PathID = n;
aa.fSize = n;
ds.AddtblFilesRow(aa);
}
}
private int do_loop(tblFiles.tblFilesDataTable tbl)
{
int result = 0;
for (int n = 0, eend = tbl.Rows.Count; n < eend; ++n)
{
if (tbl[n].IsPathIDNull())
{
++result;
}
}
return(result);
}
private void dsDatasetModify_2(tblFiles.tblFilesDataTable ds, String descr)
{
for (int n = 0, eend = ds.Rows.Count; n < eend; ++n)
{
tblFiles.tblFilesRow row = ds[n];
row.BeginEdit();
try
{
row.FileID = n;
row.fSize = n;
row.Description = descr;
}
finally
{
row.EndEdit();
}
}
}
private DataRow[] CreateIndex_2g(tblFiles.tblFilesDataTable ds)
{
return(ds.Select("", "PathID,fSize"));
}
private DataRow[] CreateIndex_1g(tblFiles.tblFilesDataTable ds)
{
return(ds.Select("", "PathID DESC"));
}
