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Catch DB constraint errors in EF

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This commit is contained in:
Lorenz Stechauner
2023-03-21 22:05:25 +01:00
parent c521bf5ffa
commit 30a97111cb
1 changed files with 3 additions and 2 deletions
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5
Elwig/Windows/MemberAdminWindow.xaml.cs
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@ -340,13 +340,13 @@ namespace Elwig.Windows {
if (ContactPostInput.IsChecked ?? false) m.DefaultContact = "post"; if (ContactPostInput.IsChecked ?? false) m.DefaultContact = "post";
if (ContactEmailInput.IsChecked ?? false) m.DefaultContact = "email"; if (ContactEmailInput.IsChecked ?? false) m.DefaultContact = "email";
EntityEntry<Member>? tr = null;
try { try {
EntityEntry<Member>? tr = null;
if (IsEditing) { if (IsEditing) {
tr = Context.Update(m); tr = Context.Update(m);
} else if (IsCreating) { } else if (IsCreating) {
m.MgNr = newMgNr; m.MgNr = newMgNr;
await Context.AddAsync(m); tr = (await Context.AddAsync(m));
} }
await Context.SaveChangesAsync(); await Context.SaveChangesAsync();
@ -354,6 +354,7 @@ namespace Elwig.Windows {
await Context.Database.ExecuteSqlAsync($"UPDATE member SET mgnr = {newMgNr} WHERE mgnr = {m.MgNr}"); await Context.Database.ExecuteSqlAsync($"UPDATE member SET mgnr = {newMgNr} WHERE mgnr = {m.MgNr}");
} }
} catch (Exception exc) { } catch (Exception exc) {
if (tr != null) await tr.ReloadAsync();
var str = "Der Eintrag konnte nicht in der Datenbank aktualisiert werden!\n\n" + exc.Message; var str = "Der Eintrag konnte nicht in der Datenbank aktualisiert werden!\n\n" + exc.Message;
if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message; if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
MessageBox.Show(str, "Mitglied aktualisieren", MessageBoxButton.OK, MessageBoxImage.Error); MessageBox.Show(str, "Mitglied aktualisieren", MessageBoxButton.OK, MessageBoxImage.Error);