I am doing an assignment involving the creation of a simple Quiz type form application. However, whenever I run the program, only the first answer shows for a multiple question and I cannot for the life of me figure out why.
This is the contstructor:
MultipleChoice dlg =
new MultipleChoice(
new Question("What is the capital of Zimbabwe?",
new Answer("Paris", false),
new Answer("Washington D.C.", false),
new Answer("Harare", true),
new Answer("Cairo", false),
new Answer("N'Djamena", false)));
if (dlg.ShowDialog() == DialogResult.OK)
{
if (dlg.Correct) MessageBox.Show("You got something right!");
else MessageBox.Show("You couldn't be more wrong");
}
And this is the Question Form Code:
private Question Q;
public MultipleChoice (Question q)
{
Q = q;
InitializeComponent();
textPrompt.Text = Q.Prompt;
if (Q.A != null)
{
radioA.Text = Q.A.Prompt;
}
else radioA.Hide();
if (Q.B != null)
{
radioB.Text = Q.B.Prompt;
}
radioB.Hide();
if (Q.C != null)
{
radioC.Text = Q.C.Prompt;
}
radioC.Hide();
if (Q.D != null)
{
radioD.Text = Q.D.Prompt;
}
radioD.Hide();
if (Q.E != null)
{
radioE.Text = Q.E.Prompt;
}
radioE.Hide();
}
public bool Correct
{
get
{
if (Q == null) return false;
if (Q.A != null && Q.A.Correct && radioA.Checked) return true;
if (Q.B != null && Q.B.Correct && radioB.Checked) return true;
if (Q.C != null && Q.C.Correct && radioC.Checked) return true;
if (Q.D != null && Q.D.Correct && radioD.Checked) return true;
if (Q.E != null && Q.E.Correct && radioE.Checked) return true;
return false;
}
}
Where have I gone wrong?
There is no else for any option after A:
if (Q.B != null)
{
radioB.Text = Q.B.Prompt;
}
radioB.Hide(); //This is **always** going to be called - hiding radioB :)
Should be:
if (Q.B != null)
radioB.Text = Q.B.Prompt;
else
radioB.Hide();
Related
i'm developing an app for a veterinary clinic in winforms.
i have this table named "petOwner" which gives a foreign key to the table "Pets". now when im trying to register a pet i get information of both the owner and the pet from the user,enter code here the owner is saved successfully (savechanges()!=0) but when it comes to pet it gives me the entity validation err on the following code where triple starred:
if (gpbx_ownerInfo.Enabled==true)
{
objOwner.name = txt_ownerName.Text;
objOwner.family = txt_ownerFamily.Text;
objOwner.mobile = txt_ownerMobile.Text;
objOwner.tel = txt_ownerTel.Text;
objOwner.address = rtxt_ownerAdrs.Text;
objOwner.comment = rtxt_ownerCmnt.Text;
if (txt_ownerName.Text != "" & txt_ownerFamily.Text != "" & txt_ownerMobile.Text != "" & rtxt_ownerAdrs.Text != "")
{
if (objDB.Tbl_ownerInfo.Where(x => x.name == txt_ownerName.Text & x.family == txt_ownerFamily.Text & x.mobile == txt_ownerMobile.Text).ToList().Count == 0)
{
objDB.Tbl_ownerInfo.Add(objOwner);
}
else
{
MessageBox.Show("This keeper already exist\nTry finding them using the 'Keeper already Registered' link.");
}
}
else
{
MessageBox.Show("Fill the starred items please");
txt_ownerName.BackColor = Color.MistyRose;
txt_ownerFamily.BackColor = Color.MistyRose;
txt_ownerMobile.BackColor = Color.MistyRose;
rtxt_ownerAdrs.BackColor = Color.MistyRose;
}
if (objDB.SaveChanges() != 0)
{
gpbx_ownerInfo.Enabled = false;
objPet.ownerID = objDB.Tbl_ownerInfo.Max(s => s.ID);
objPet.name = txt_petName.Text;
objPet.species = txt_petSpecies.Text;
objPet.breed = txt_petBreed.Text;
objPet.birthDate = dt_petBDate.Value.Date;
if (cbox_petGender.Text == "Male")
{
objPet.gender = true;
}
else if (cbox_petGender.Text == "Female")
{
objPet.gender = false;
}
else
objPet.dominatingClr = txt_petClr.Text;
objPet.distinguishingMarks = rtxt_petMarks.Text;
if (txt_petName.Text != "" & txt_petSpecies.Text != "" & cbox_petGender.Text != "" & txt_petClr.Text != "" & cbox_petGender.Items.Contains(cbox_petGender.Text))
{
if (objDB.Tbl_Pets.Where(p => p.name == txt_petName.Text & p.species == txt_petSpecies.Text & p.breed == txt_petBreed.Text & p.dominatingClr == txt_petClr.Text).ToList().Count == 0)
{
objDB.Tbl_Pets.Add(objPet);
***if (objDB.SaveChanges() != 0)***
{
gpbx_ownerInfo.Enabled = true;
textCleaner();
MessageBox.Show("Pet registered successfully");
}
}
else
{
gpbx_ownerInfo.Enabled = false;
MessageBox.Show("This pet already exists");
}
now i know a lot of people don't get this in winforms they usually face it in asp.net
and i've searched a lot but every body has given answers on asp
here is the exception:enter image description here
I'm swapping my values in List Object on some conditions and update List Object value.
Currently, what I'm doing is
- Looping on each object through List
- Check If condition is net
- Swap values
public static void SwapMinMaxIfNull<T>(this IEnumerable<T> rows, string reportfor)
{
if (reportfor.Equals("Comparison"))
{
var row = rows as IEnumerable<RiskBoardDataToExport>;
try
{
if (rows.Any())
{
var Tests = row.Where(min => min.MinGaitSpeed == null && min.MaxGaitSpeed != null).ToList();
if (Tests != null)
{
foreach (RiskBoardDataToExport test in Tests)
{
test.MinGaitSpeed = test.MaxGaitSpeed;
test.MaxGaitSpeed = null;
}
}
// again check for next object
Tests = row.Where(min => min.MinTUGTime == null && min.MaxTUGTime != null).ToList();
if (Tests != null)
{
foreach (RiskBoardDataToExport test in Tests)
{
test.MinTUGTime = test.MaxTUGTime;
test.MaxTUGTime = null;
}
}
// again check for next object
Tests = row.Where(min => min.MinBergScoreSpeed == null && min.MaxBergScoreSpeed != null).ToList();
if (Tests != null)
{
foreach (RiskBoardDataToExport test in Tests)
{
test.MinBergScoreSpeed = test.MaxBergScoreSpeed;
test.MaxBergScoreSpeed = null;
}
}
//.. for brevity
}
}
}
Can I do it in better way? I know about PropertyInfo i.e. Can check property name and get value etc, but, not having any hint to get this done.
Thanks
It's not exactly what you're asking for, but you can combine the clauses in your Where statements and then have a few if statements in the body:
public static void SwapMinMaxIfNull(this IEnumerable<RiskBoardDataToExport> rows,
string reportfor)
{
if (rows = null) return;
if (reportfor.Equals("Comparison", StringComparison.OrdinalIgnoreCase))
{
foreach (var row in rows.Where(r =>
(r.MinGaitSpeed == null && r.MaxGaitSpeed != null) ||
(r.MinBergScoreSpeed == null && r.MaxBergScoreSpeed != null) ||
(r.MinBergScoreSpeed == null && r.MaxBergScoreSpeed != null)))
{
if (row.MinGaitSpeed == null)
{
row.MinGaitSpeed = row.MaxGaitSpeed;
row.MaxGaitSpeed = null;
}
if (row.MinTUGTime == null)
{
row.MinTUGTime = row.MaxTUGTime;
row.MaxTUGTime = null;
}
if (row.MinBergScoreSpeed == null)
{
row.MinBergScoreSpeed = row.MaxBergScoreSpeed;
row.MaxBergScoreSpeed = null;
}
}
}
}
As this is an operation where order of the items in the list does not matter, you can easily speed this up by parallelization (you can read up on that here).
So, what you should do, is handle this foreach loop in a parallel way and combine it with Rufus L's optimized code for the fastest result.
var rows = rows.Where(r =>
(r.MinGaitSpeed == null && r.MaxGaitSpeed != null) ||
(r.MinBergScoreSpeed == null && r.MaxBergScoreSpeed != null) ||
(r.MinBergScoreSpeed == null && r.MaxBergScoreSpeed != null))
Parallel.ForEach(rows, (row) => {
{
if (row.MinGaitSpeed == null)
{
row.MinGaitSpeed = row.MaxGaitSpeed;
row.MaxGaitSpeed = null;
}
if (row.MinTUGTime == null)
{
row.MinTUGTime = row.MaxTUGTime;
row.MaxTUGTime = null;
}
if (row.MinBergScoreSpeed == null)
{
row.MinBergScoreSpeed = row.MaxBergScoreSpeed;
row.MaxBergScoreSpeed = null;
}
}
Note that this requires the System.Threading.Tasks namespace, that's where the Parallel class is.
I want to create filrer for 4 fields. But I get too many code.
I need filter when just one field choosen or a few (2,3 or 4) fields at the same time. How to create logic for it?
My ugly code:
void ViewSource_Filter(object sender, FilterEventArgs e)
{
if (e.Item is Event evnt)
{
bool selectedModel = filterEventsControl.ComboBoxModels.SelectedIndex != 0 && filterEventsControl.ComboBoxModels.SelectedItem != null;
bool selectedIp = filterEventsControl.ComboBoxIPs.SelectedIndex != 0 && filterEventsControl.ComboBoxIPs.SelectedItem != null;
bool selectedParameter = filterEventsControl.ComboBoxParameters.SelectedIndex != 0 && filterEventsControl.ComboBoxParameters.SelectedItem != null;
bool selectedStatus = filterEventsControl.ComboBoxStatus.SelectedIndex != 0 && filterEventsControl.ComboBoxStatus.SelectedItem != null;
if (selectedModel && !selectedIp && !selectedParameter && !selectedStatus)
{
var model = filterEventsControl.ComboBoxModels.SelectedItem.ToString();
if (evnt.DeviceName == model)
{
e.Accepted = true;
}
else
{
e.Accepted = false;
}
}
else if (selectedModel && selectedIp && !selectedParameter && !selectedStatus)
{
var model = filterEventsControl.ComboBoxModels.SelectedItem.ToString();
var ip = filterEventsControl.ComboBoxIPs.SelectedItem.ToString();
if (evnt.DeviceName == model && evnt.Ip == ip)
{
e.Accepted = true;
}
else
{
e.Accepted = false;
}
}
...
else
{
e.Accepted = true;
}
}
}
It can be something like this:
bool FilterByName(Event evnt)
{
var model = filterEventsControl.ComboBoxModels.SelectedItem?.ToString();
return evnt.DeviceName == model;
}
bool FilterByIp(Event evnt)
{
var ip = filterEventsControl.ComboBoxIPs.SelectedItem?.ToString();
return evnt.Ip == ip;
}
void ViewSource_Filter(object sender, FilterEventArgs e)
{
...
bool res = true;
if (selectedModel)
res = res && FilterByName();
if (selectedIp)
res = res && FilterByIp();
...
}
I am trying to find out that in ad, user has allowed to change password or not.
I have used SearchResponse to find out that user exists or not.
SearchResponse response = (SearchResponse)connection.SendRequest(request);
DirectoryAttribute attribute = response.Entries[0].Attributes["ntSecurityDescriptor"];
if (attribute != null)
{
const string PASSWORD_GUID = "{ab721a53-1e2f-11d0-9819-00aa0040529b}";
const int ADS_ACETYPE_ACCESS_DENIED_OBJECT = 6;
bool fEveryone = false;
bool fSelf = false;
ActiveDs.ADsSecurityUtility secUtility = new ActiveDs.ADsSecurityUtility();
ActiveDs.IADsSecurityDescriptor sd = (IADsSecurityDescriptor)secUtility.ConvertSecurityDescriptor((byte[])attribute[0], (int)ADS_SD_FORMAT_ENUM.ADS_SD_FORMAT_RAW, (int)ADS_SD_FORMAT_ENUM.ADS_SD_FORMAT_IID);
ActiveDs.IADsAccessControlList acl = (ActiveDs.IADsAccessControlList)sd.DiscretionaryAcl;
foreach (ActiveDs.IADsAccessControlEntry ace in acl)
{
if ((ace.ObjectType != null) && (ace.ObjectType.ToUpper() == PASSWORD_GUID.ToUpper()))
{
if ((ace.Trustee == "Everyone") && (ace.AceType == ADS_ACETYPE_ACCESS_DENIED_OBJECT))
{
fEveryone = true;
}
if ((ace.Trustee == #"NT AUTHORITY\SELF") && (ace.AceType == ADS_ACETYPE_ACCESS_DENIED_OBJECT))
{
fSelf = true;
}
break;
}
}
if (fEveryone || fSelf)
{
return Global.RequestContants.CANT_CHANGE_PASSWORD;
}
else
{
return string.Empty;
}
}
I am using this code for datalist validation.
I am binding the image in datalist after that i am trying to give the caption to each image suppose there is 3 image is datalist then for the first image i am able to give but for the other one i am unable to.. i think there is some error in conditions help me in this. code is following..
if (DataList1.Items.Count == 0)
{
msgError.Text = "Please add images and captions for each image";
msgError.Focus();
}
else
AddCaption();
bool IsEmptyCaption = false;
Hashtable htble = (Hashtable)ViewState["imgIdCapHtbl"];
List<int> imgIds = (List<int>)ViewState["imgIds"];
if (htble != null && imgIds != null)
{
foreach (int id in imgIds)
{
if (htble[id] == "")
{
IsEmptyCaption = true;
break;
}
else
IsEmptyCaption = false;
}
}
else
IsEmptyCaption = true;
if (DataList1.Items.Count == 0)
{
msgError.Text = "Please add images";
msgError.Focus();
}
else if (IsEmptyCaption)
{
msgError.Text = "Please add captions for each image";
msgError.Focus();
}
else
{
Args[0] = "Section1";
Args[1] = "";
Args[2] = FindingId.ToString();
Args[3] = FindingIdIns.ToString();
AnotherHeading = false;
//AddCaption();
objGetBaseCase.UpdateImageCaptions((Hashtable)ViewState["imgIdCapHtbl"]);
if (AddFindingsViewerDetails != null)
AddFindingsViewerDetails(Args, e);
ClearImages();
PageContent pg = (PageContent)this.Parent.FindControl("PageContent");
if (pg != null)
pg.LoadWorkflowForCase();
if (Display != null)
Display(null, EventArgs.Empty);
}
if (DataList1.Items.Count == 0)
{
msgError.Text = "Please add images and captions for each image";
msgError.Focus();
}
else
AddCaption();
bool IsEmptyCaption = false;
Hashtable htble = (Hashtable)ViewState["imgIdCapHtbl"];
List<int> imgIds = (List<int>)ViewState["imgIds"];
if (htble != null && imgIds != null)
{
foreach (int id in imgIds)
{
if (htble[id] == "" || htble[id] == null) // New code implemented here
{
IsEmptyCaption = true;
break;
}
else
IsEmptyCaption = false;
}
}
else
IsEmptyCaption = true;
if (DataList1.Items.Count == 0)
{
msgError.Text = "Please add images";
msgError.Focus();
}
else if (IsEmptyCaption)
{
msgError.Text = "Please add captions for each image";
msgError.Focus();
}
else
{
Args[0] = "Section1";
Args[1] = "";
Args[2] = FindingId.ToString();
Args[3] = FindingIdIns.ToString();
AnotherHeading = false;
//AddCaption();
objGetBaseCase.UpdateImageCaptions((Hashtable)ViewState["imgIdCapHtbl"]);
if (AddFindingsViewerDetails != null)
AddFindingsViewerDetails(Args, e);
ClearImages();
PageContent pg = (PageContent)this.Parent.FindControl("PageContent");
if (pg != null)
pg.LoadWorkflowForCase();
if (Display != null)
Display(null, EventArgs.Empty);
}
Now its working fine...