private void BtnExport_Click(object sender, EventArgs e)
{
if (curForm == null)
{
return;
}
var table = tables[cbxExportData.SelectedIndex];
curForm.Data = table;
curForm.ExportWithColumnName = ExportWithColumnName;
curForm.StartExport();
curForm.DoWorkCorrectly = false;
curForm.CancelWork = false;
WaitProgressForm wait = new WaitProgressForm(this, curForm.Export, EndExport)
{
WidthDialog = this.Size.Width - 10,
Maximum = table.Rows.Count,
Value = 0
};
wait.CancelWork += new EventHandler(Wait_CancelWork);
wait.CancelImage = this.CancelImage;
wait.Message = "Configuration";
wait.BeginOperation();
}
internal protected override void Export(WaitProgressForm wait)
{
wait.Message = "Initalize";
DoWorkCorrectly = true;
StreamWriter streamWriter = null;
FileStream fs = null;
CsvExport exporter = new CsvExport(delimiter, Data, ExportWithColumnName);
try
{
if (File.Exists(fileName))
{
File.Delete(fileName);
}
if (File.Exists(fileName))
{
File.Delete(fileName);
}
wait.Message = "Create CSV Format";
fs = new FileStream(fileName, FileMode.CreateNew);
streamWriter = new StreamWriter(fs, System.Text.Encoding.UTF8);
exporter.Progress += (s, e) =>
{
wait.Value = e.CurrentIndex;
if (CancelWork)
{
exporter.CancelWork = true;
}
};
exporter.Convert(streamWriter);
streamWriter.Flush();
fs.Flush();
streamWriter.Close();
fs.Close();
}
catch
{
DoWorkCorrectly = false;
if (fs != null)
{
if (streamWriter != null)
{
streamWriter.Close();
}
fs.Close();
}
}
}
private void btnWaitProgress_Click(object sender, EventArgs e)
{
WaitProgressForm wait = new WaitProgressForm(
this, BeginWaitProgress, EndWaitProgress, true);
wait.WidthDialog = this.Size.Width - 10;
wait.Maximum = 20;
wait.Value = 0;
wait.CancelWork += new EventHandler(CancelWorkWaitProgress);
wait.BeginOperation();
}
private void BeginWaitProgress(WaitProgressForm wait)
{
cancelWaitProgress = false;
wait.Message = "Initalize";
for (int i = 0; i < 20 && !cancelWaitProgress; i++)
{
if (i == 5)
{
wait.Message = "i >= 5";
}
wait.Value = i;
Thread.Sleep(200);
}
cancelWaitProgress = true;
}
protected override void Export(WaitProgressForm wait)
{
wait.Message = "Initalize";
DoWorkCorrectly = true;
FileStream stream = null;
XlsExportBIFF2 writer = null;
try
{
if (File.Exists(fileName))
{
File.Delete(fileName);
}
wait.Message = "Open file";
stream = new FileStream(fileName, FileMode.OpenOrCreate);
writer = new XlsExportBIFF2(stream, Codepage);
wait.Message = "Move data";
writer.WriteBegin();
int row = 0;
if (ExportWithColumnName)
{
for (int j = 0; j < Data.Columns.Count; j++)
{
writer.WriteCell(row, j, Data.Columns[j].ColumnName);
}
row++;
}
for (int i = 0; i < Data.Rows.Count; i++)
{
wait.Value = i;
if (CancelWork)
{
throw new Exception("Cancel!");
}
for (int j = 0; j < Data.Columns.Count; j++)
{
object o = Data.Rows[i].ItemArray[j];
if (o == null)
{
o = string.Empty;
}
writer.WriteCell(row, j, o.ToString());
}
row++;
}
wait.Message = "Close file";
writer.WriteEnd();
stream.Close();
if (bOpenAfterCreate)
{
try
{
System.Diagnostics.Process.Start(fileName);
}
catch (Exception exc)
{
throw new Exception("Can not open '" + fileName + "'!", exc);
}
}
}
catch
{
DoWorkCorrectly = false;
if (stream != null)
{
if (writer != null)
{
writer.WriteEnd();
}
stream.Close();
}
}
}
} //use in current thread
internal protected virtual void Export(WaitProgressForm wait)
{
} //use in multi-thread
