// Observe LOAD functions
public static FileOperationResult ObservedLoad(FileOperationDelegate loadFile, string fileName, string message, FileErrorPolicy policy)
{
try {
loadFile();
OnFileLoaded(new FileNameEventArgs(fileName));
return(FileOperationResult.OK);
} catch (Exception e) {
switch (policy)
{
case FileErrorPolicy.Inform:
using (SaveErrorInformDialog informDialog = new SaveErrorInformDialog(fileName, message, "${res:FileUtilityService.ErrorWhileLoading}", e)) {
informDialog.ShowDialog();
}
break;
case FileErrorPolicy.ProvideAlternative:
using (SaveErrorChooseDialog chooseDialog = new SaveErrorChooseDialog(fileName, message, "${res:FileUtilityService.ErrorWhileLoading}", e, false)) {
switch (chooseDialog.ShowDialog())
{
case DialogResult.OK: // choose location (never happens here)
break;
case DialogResult.Retry:
return(ObservedLoad(loadFile, fileName, message, policy));
case DialogResult.Ignore:
return(FileOperationResult.Failed);
}
}
break;
}
}
return(FileOperationResult.Failed);
}
public static FileOperationResult ObservedSave(NamedFileOperationDelegate saveFileAs, string fileName, string message, FileErrorPolicy policy)
{
System.Diagnostics.Debug.Assert(IsValidFileName(fileName));
try {
string directory = Path.GetDirectoryName(fileName);
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
saveFileAs(fileName);
OnFileSaved(new FileNameEventArgs(fileName));
return(FileOperationResult.OK);
} catch (Exception e) {
switch (policy)
{
case FileErrorPolicy.Inform:
using (SaveErrorInformDialog informDialog = new SaveErrorInformDialog(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e)) {
informDialog.ShowDialog();
}
break;
case FileErrorPolicy.ProvideAlternative:
restartlabel:
using (SaveErrorChooseDialog chooseDialog = new SaveErrorChooseDialog(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, true)) {
switch (chooseDialog.ShowDialog())
{
case DialogResult.OK:
using (SaveFileDialog fdiag = new SaveFileDialog()) {
fdiag.OverwritePrompt = true;
fdiag.AddExtension = true;
fdiag.CheckFileExists = false;
fdiag.CheckPathExists = true;
fdiag.Title = "Choose alternate file name";
fdiag.FileName = fileName;
if (fdiag.ShowDialog() == DialogResult.OK)
{
return(ObservedSave(saveFileAs, fdiag.FileName, message, policy));
}
else
{
goto restartlabel;
}
}
case DialogResult.Retry:
return(ObservedSave(saveFileAs, fileName, message, policy));
case DialogResult.Ignore:
return(FileOperationResult.Failed);
}
}
break;
}
}
return(FileOperationResult.Failed);
}
// Observe LOAD functions
public static FileOperationResult ObservedLoad(FileOperationDelegate loadFile, string fileName, string message, FileErrorPolicy policy)
{
try {
loadFile();
OnFileLoaded(new FileNameEventArgs(fileName));
return FileOperationResult.OK;
} catch (Exception e) {
switch (policy) {
case FileErrorPolicy.Inform:
using (SaveErrorInformDialog informDialog = new SaveErrorInformDialog(fileName, message, "${res:FileUtilityService.ErrorWhileLoading}", e)) {
informDialog.ShowDialog();
}
break;
case FileErrorPolicy.ProvideAlternative:
using (SaveErrorChooseDialog chooseDialog = new SaveErrorChooseDialog(fileName, message, "${res:FileUtilityService.ErrorWhileLoading}", e, false)) {
switch (chooseDialog.ShowDialog()) {
case DialogResult.OK: // choose location (never happens here)
break;
case DialogResult.Retry:
return ObservedLoad(loadFile, fileName, message, policy);
case DialogResult.Ignore:
return FileOperationResult.Failed;
}
}
break;
}
}
return FileOperationResult.Failed;
}
public static FileOperationResult ObservedSave(NamedFileOperationDelegate saveFileAs, string fileName, string message, FileErrorPolicy policy)
{
System.Diagnostics.Debug.Assert(IsValidFileName(fileName));
try {
string directory = Path.GetDirectoryName(fileName);
if (!Directory.Exists(directory)) {
Directory.CreateDirectory(directory);
}
saveFileAs(fileName);
OnFileSaved(new FileNameEventArgs(fileName));
return FileOperationResult.OK;
} catch (Exception e) {
switch (policy) {
case FileErrorPolicy.Inform:
using (SaveErrorInformDialog informDialog = new SaveErrorInformDialog(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e)) {
informDialog.ShowDialog();
}
break;
case FileErrorPolicy.ProvideAlternative:
restartlabel:
using (SaveErrorChooseDialog chooseDialog = new SaveErrorChooseDialog(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, true)) {
switch (chooseDialog.ShowDialog()) {
case DialogResult.OK:
using (SaveFileDialog fdiag = new SaveFileDialog()) {
fdiag.OverwritePrompt = true;
fdiag.AddExtension = true;
fdiag.CheckFileExists = false;
fdiag.CheckPathExists = true;
fdiag.Title = "Choose alternate file name";
fdiag.FileName = fileName;
if (fdiag.ShowDialog() == DialogResult.OK) {
return ObservedSave(saveFileAs, fdiag.FileName, message, policy);
} else {
goto restartlabel;
}
}
case DialogResult.Retry:
return ObservedSave(saveFileAs, fileName, message, policy);
case DialogResult.Ignore:
return FileOperationResult.Failed;
}
}
break;
}
}
return FileOperationResult.Failed;
}