[英]C# Winform Retry
我有一個重試表格的問題。 通過此表格,我可以從互聯網上加載文件。 完成后,主窗體再次彈出。 到現在為止還挺好。
但是,當用戶按“取消”時,將再次彈出“保存”對話框。 但是,當用戶按下“取消”按鈕時,我想要的是他返回到主表單。
我認為應該在這一部分中:
if (saveFileDialog1.ShowDialog() == DialogResult.Cancel)
{
return Result.Cancelled;
}
這是我的代碼的一部分:
try
{
// Create a form to select objects.
DialogResult result = System.Windows.Forms.DialogResult.None;
while (result == DialogResult.None || result == DialogResult.Retry)
{
// Picking Objects.
if (result == DialogResult.Retry)
{
System.Windows.Forms.SaveFileDialog saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
saveFileDialog1.InitialDirectory = Convert.ToString(Environment.SpecialFolder.MyDocuments);
saveFileDialog1.FileName = "test";
saveFileDialog1.Filter = "Family Files (*.rfa)|*.rfa|All Files (*.*)|*.*";
saveFileDialog1.FilterIndex = 1;
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
string address = "http://www.autodesk.com/revit-basic-sample-family-2017-enu?_ga=2.28765692.1750602280.1538397390-459409917.1521646598";
System.Net.WebClient webClient = new System.Net.WebClient();
webClient.DownloadFile(address, saveFileDialog1.FileName);
}
Autodesk.Revit.DB.Family family = null;
using (Transaction tx = new Transaction(doc))
{
tx.Start("Load Family");
if (doc.LoadFamily(saveFileDialog1.FileName, out family))
{
String name = family.Name;
TaskDialog.Show("Revit", "Family file " + name + " has been loaded " );
}
else
{
TaskDialog.Show("Revit", "Can't load the family file or already exists.");
}
tx.Commit();
}
if (saveFileDialog1.ShowDialog() == DialogResult.Cancel)
{
return Result.Cancelled;
}
}
// Show the dialog.
using (pickForm selectionForm = new pickForm(commandData))
{
result = selectionForm.ShowDialog();
}
}
return Result.Succeeded;
每次調用saveFileDialog1.ShowDialog()
都會打開對話框。 您需要存儲調用結果,以便以后檢查:
if (result == DialogResult.Retry)
{
System.Windows.Forms.SaveFileDialog saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
saveFileDialog1.InitialDirectory = Convert.ToString(Environment.SpecialFolder.MyDocuments);
saveFileDialog1.FileName = "test";
saveFileDialog1.Filter = "Family Files (*.rfa)|*.rfa|All Files (*.*)|*.*";
saveFileDialog1.FilterIndex = 1;
// store result of the dialog
var dialogResult = saveFileDialog1.ShowDialog();
if (dialogResult == DialogResult.OK)
{
// ...
}
// ...
// compare the result without opening the dialog again.
if (dialogResult == DialogResult.Cancel)
{
return Result.Cancelled;
}
我認為您可以輕松地使用if ... else
語句,如下所示:
System.Windows.Forms.SaveFileDialog saveFileDialog1 = new SaveFileDialog();
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
// your code
}
else // For Cancel
{
return Result.Cancelled;
}
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