I am currently making a GUI in WPF, and am working on a page intended to create and configure message rooms but the following code below
else if (Password_Enabled.IsChecked == true && Password.Text.Length == 0)
{
return false;
}
appears with an error of
Password_Enabled.IsChecked 'Password_Enabled.IsChecked' threw an exception of type 'System.NullReferenceException'
My Xaml for the CheckBox appears as follows
<CheckBox x:Name="Password_Enabled" IsChecked="False" Content="Password Enabled" HorizontalAlignment="Left" VerticalAlignment="Top" Checked="Password_Enabled_Checked" Unchecked="Password_Disabled_Checked" Margin="10,5,0,0" Grid.RowSpan="2"/>
I've searched online, but with errors like these it's standardised, I know it means that the checkbox is being treated as null. But while searching through my code haven't found anything stating why, any help on this would be much appreciated, thank you.
Edit
My FullCode for the Page C# is
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace ChatRoom
{
/// <summary>
/// Interaction logic for New_Server.xaml
/// </summary>
public partial class New_Server : Page
{
public New_Server()
{
InitializeComponent();
Owner.Text = Global_Class.GetUsername(Environment.UserName);
}
public static string ChosenAddress = "";
private bool CheckValidCredentials()
{
List<string> IllegalCharacters = new List<string>() { ",", "|", "\\", "/", ".", "?", "\"", "<", ">", ":" };
bool Illegal = false;
if (ServerName.Text.Length == 0)
{
return false;
}
foreach (string Check in IllegalCharacters)
{
if (ServerName.Text.Contains(Check))
{
Illegal = true;
break;
}
}
if (Illegal)
{
return false;
}
else if (Password_Enabled.IsChecked == true && Password.Text.Length == 0)
{
return false;
}
else if (ChosenAddress == "")
{
return false;
}
else
{
return true;
}
}
public void SetMakeServer()
{
if (CheckValidCredentials())
{
MakeServer.IsEnabled = true;
}
else
{
MakeServer.IsEnabled = false;
}
}
private void Public_Server_Checked(object sender, RoutedEventArgs e)
{
MessageBox.Show("This Server Will Be Open to everyone in the College, Please Untick if you wish to change this.");
CheckValidCredentials();
}
private void Password_Enabled_Checked(object sender, RoutedEventArgs e)
{
Password.IsEnabled = true;
OneTimePass.IsEnabled = true;
SetMakeServer();
}
private void Password_Disabled_Checked(object sender, RoutedEventArgs e)
{
Password.IsEnabled = false;
OneTimePass.IsEnabled = false;
SetMakeServer();
}
private void Back_Click(object sender, RoutedEventArgs e)
{
this.NavigationService.Navigate(new Server_Selection());
}
private void ServerDirectorySet_Click(object sender, RoutedEventArgs e)
{
using (var fbd = new System.Windows.Forms.FolderBrowserDialog())
{
System.Windows.Forms.DialogResult result = fbd.ShowDialog();
if (result == System.Windows.Forms.DialogResult.OK)
{
ChosenAddress = fbd.SelectedPath;
ServerDirectoryDisplay.Content = "Location: " + ChosenAddress;
}
else
{
ChosenAddress = "";
SetMakeServer();
}
}
}
private void ServerName_TextChanged(object sender, TextChangedEventArgs e)
{
SetMakeServer();
}
private void Password_TextChanged(object sender, TextChangedEventArgs e)
{
SetMakeServer();
}
}
}
InitializeComponent has to finish before you interact with anything on the UI. If you try to access visual elements in your code before WPF has finished initializing them you'll get the null errors.
Related
I'm trying to realize web searches to get the title of websites on a Google search.
I got a code that works well on other sites, but using Google I got duplicated results.
I have tried and tried, but I can't see where is the mistake.
Code simplified:
public partial class Form1 : Form
{
WebBrowser navegador = new WebBrowser();
private void Form1_Load(object sender, EventArgs e)
{
navegador.ScriptErrorsSuppressed = true;
navegador.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(this.datos);
}
private void datos(object sender, EventArgs e)
{
try
{
foreach (HtmlElement etiqueta in navegador.Document.All)
{
if (etiqueta.GetAttribute("classname").Contains("LC20lb DKV0Md"))
{
listBox1.Items.Add(etiqueta.InnerText);
}
}
}
catch (Exception exception) { }
}
private void function(object sender, EventArgs e)
{
/// string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate("https://google.com/search?q=water");
/// this.Text = query;
}
}
Result:
I don't know how google works but you can prevent duplicates like this
if(!listBox1.Items.Contains(etiqueta.InnerText))
listBox1.Items.Add(etiqueta.InnerText);
After a couple of days researching and improving the code I decided to change the list for a table.
In addition, now the searches are not duplicated and are positioned in the table as expected
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace SourceDownloader
{
public partial class Form1 : Form
{
strs valor = new strs();
public Form1()
{
InitializeComponent();
}
WebBrowser navegador = new WebBrowser();
private void Form1_Load(object sender, EventArgs e)
{
navegador.ScriptErrorsSuppressed = true;
navegador.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(this.datos);
}
private void datos(object sender, EventArgs e)
{
try
{
foreach (HtmlElement etq in navegador.Document.All)
{
if (etq.GetAttribute("classname").Contains("r")) /// LC20lb DKV0Md
{
foreach (HtmlElement a_et in etq.GetElementsByTagName("a"))
{
valor.link = a_et.GetAttribute("href");
}
foreach (HtmlElement t_et in etq.GetElementsByTagName("h3"))
{
valor.tit = t_et.InnerText;
}
bool exist = dataGridView1.Rows.Cast<DataGridViewRow>().Any(row => Convert.ToString(row.Cells["link"].Value) == valor.link);
var s1 = valor.link;
bool b = s1.Contains("google.com");
bool a = s1.Contains("googleusercontent");
if (!exist /* && !b && !a*/)
{
dataGridView1.Rows.Insert(0, valor.tit, valor.link);
}
}
if (etq.GetAttribute("classname").Contains("G0iuSb"))
{
valor.next = etq.GetAttribute("href");
}
}
more_ops.Enabled = true;
}
catch (Exception)
{
}
}
private void function(object sender, EventArgs e)
{
string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate(query);
this.Text = query;
}
private void more_ops_Click(object sender, EventArgs e)
{
string query = valor.next;
navegador.Navigate(query);
this.Text = query;
}
private void dataGridView1_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)
{
try
{
var msg = dataGridView1.CurrentCell.Value;
System.Diagnostics.Process.Start(msg.ToString());
}
catch (Exception)
{
MessageBox.Show("Error");
}
}
private void Enter(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Return)
{
string texto = query_box.Text;
texto = texto.Replace("\n", "");
query_box.Text = texto;
string query = "https://google.com/search?q=" + query_box.Text;
navegador.Navigate(query);
this.Text = query;
}
}
}
/// global values
class strs
{
private string _link = "N/A";
private string _tit = "N/A";
private string _next = "N/A";
public string tit
{
get
{
return _tit;
}
set
{
_tit = value;
}
}
public string link
{
get
{
return _link;
}
set
{
_link = value;
}
}
public string next
{
get
{
return _next;
}
set
{
_next = value;
}
}
}
}
This question already has answers here:
How do you pass an object from form1 to form2 and back to form1?
(4 answers)
Closed 5 years ago.
I'm supposed to make a math practice program for kids. They should be able to choose 1 operation and the amount of digits (1, 2 or 3 digit) the numbers will have. It then has to out put 10 random questions according to the selection made by the kid, then once they have completed the quiz, it should display their results and which questions they got wrong.
I have two selections being made on form1, operations and # of digits, which are assigned numbers (1. (*) 2. (/) 3. (+) 4. (-)). All i need to do is communicate the operation number and # of digits to form2, where the questions will be generated and displayed.
Here's my code for form1 so far:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FinalProject
{
public partial class Form1 : Form
{
public static int operation = 0;
public static int digits = 0;
public Form1()
{
InitializeComponent();
}
// this is to make sure only one box is checked for both selections. Starts here
private void label1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
}
private void MulCB_CheckedChanged(object sender, EventArgs e)
{
if ( MulCB.Checked == true)
{
operation = 1;
DivCB.Checked = false;
AddCB.Checked = false;
SubCB.Checked = false;
}
}
private void DivCB_CheckedChanged(object sender, EventArgs e)
{
if (DivCB.Checked == true)
{
operation = 2;
MulCB.Checked = false;
AddCB.Checked = false;
SubCB.Checked = false;
}
}
private void AddCB_CheckedChanged(object sender, EventArgs e)
{
if (AddCB.Checked == true)
{
operation = 3;
DivCB.Checked = false;
SubCB.Checked = false;
MulCB.Checked = false;
}
}
private void SubCB_CheckedChanged(object sender, EventArgs e)
{
if (SubCB.Checked == true)
{
operation = 4;
DivCB.Checked = false;
AddCB.Checked = false;
MulCB.Checked = false;
}
}
private void oneDCB_CheckedChanged(object sender, EventArgs e)
{
if(oneDCB.Checked == true)
{
digits = 1;
twoDCB.Checked = false;
threeDCB.Checked = false;
}
}
private void twoDCB_CheckedChanged(object sender, EventArgs e)
{
if ( twoDCB.Checked == true)
{
digits = 2;
oneDCB.Checked = false;
threeDCB.Checked = false;
}
}
private void threeDCB_CheckedChanged(object sender, EventArgs e)
{
if (threeDCB.Checked == true)
{
digits = 3;
oneDCB.Checked = false;
twoDCB.Checked = false;
}
}
private void button8_Click(object sender, EventArgs e)
{
// operations: 1. (*) 2. (/) 3. (+) 4. (-)
// digits are as number indicates.
// Second window popup.
Form2 settingsForm = new Form2();
settingsForm.Show();
}
}
}
Here's form2, naked pretty much.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FinalProject
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void FinishedBtn_Click(object sender, EventArgs e)
{
}
}
}
This might work.
There are comments in the code.
The workflow is creating a new instance of the class Form2 and setting two public variables. Public means that they can be accessed from outside of the class (see here, if you want). Then the method Show() is called and the Form appears. In the Form2 code, the public variables now have the values previously specified and can be used.
Form1:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FinalProject
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
// this is to make sure only one box is checked for both selections. Starts here
private void label1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
}
private void MulCB_CheckedChanged(object sender, EventArgs e)
{
if ( MulCB.Checked == true)
{
operation = 1;
DivCB.Checked = false;
AddCB.Checked = false;
SubCB.Checked = false;
}
}
private void DivCB_CheckedChanged(object sender, EventArgs e)
{
if (DivCB.Checked == true)
{
operation = 2;
MulCB.Checked = false;
AddCB.Checked = false;
SubCB.Checked = false;
}
}
private void AddCB_CheckedChanged(object sender, EventArgs e)
{
if (AddCB.Checked == true)
{
operation = 3;
DivCB.Checked = false;
SubCB.Checked = false;
MulCB.Checked = false;
}
}
private void SubCB_CheckedChanged(object sender, EventArgs e)
{
if (SubCB.Checked == true)
{
operation = 4;
DivCB.Checked = false;
AddCB.Checked = false;
MulCB.Checked = false;
}
}
private void oneDCB_CheckedChanged(object sender, EventArgs e)
{
if(oneDCB.Checked == true)
{
digits = 1;
twoDCB.Checked = false;
threeDCB.Checked = false;
}
}
private void twoDCB_CheckedChanged(object sender, EventArgs e)
{
if ( twoDCB.Checked == true)
{
digits = 2;
oneDCB.Checked = false;
threeDCB.Checked = false;
}
}
private void threeDCB_CheckedChanged(object sender, EventArgs e)
{
if (threeDCB.Checked == true)
{
digits = 3;
oneDCB.Checked = false;
twoDCB.Checked = false;
}
}
private void button8_Click(object sender, EventArgs e)
{
// operations: 1. (*) 2. (/) 3. (+) 4. (-)
// digits are as number indicates.
// Second window popup.
// it's the question form, right?
Form2 questionForm = new Form2();
//"Write" your settings in the other form's variables
//You will have to write code that finds out which checkbox is which number! For now its fixed.
questionForm.operation = 2;
questionForm.digits = 1;
questionForm.Show();
//Hide Form1
this.Hide();
}
}
}
Form2:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FinalProject
{
public partial class Form2 : Form
{
public static int operation;
public static int digits;
public Form2()
{
InitializeComponent();
}
//do NOT paste this. It can be added by creating an event handler
// you also might not need this, but this method is called when this Form appears. It's an example.
// https://msdn.microsoft.com/en-us/library/zwwsdtbk(v=vs.80).aspx
private void Form2_Load(object sender, EventArgs e)
{
//here you can use your variables for example (also anywhere within this class!)
//e.g.
Textbox1.Text = (string)operation;
}
private void FinishedBtn_Click(object sender, EventArgs e)
{
}
}
}
When the code in the event TextChanged was inside the event TextBoxURL_KeyDown it was working fine also with the logic i wanted. But then i had to press the enter key, so i moved it to the TextChanged event but now when i type a valid in the TextBoxUrl nothing happens.
Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace DownloadMultipleFiles
{
public partial class AddNewDownloads : Form
{
public AddNewDownloads()
{
InitializeComponent();
foreach (Control ctrl in this.Controls)
{
if ((ctrl as TextBox) != null)
{
(ctrl as TextBox).TextChanged += TextChanged;
}
}
this.TextBoxURL.KeyDown += new KeyEventHandler(TextBoxURL_KeyDown); //add keyDown event
if (TextBoxFilename.Text == "" || TextBoxBrowse.Text == "")
{
TextBoxFilename.Enabled = false;
TextBoxBrowse.Enabled = false;
btnOK.Enabled = false;
}
}
private void AddNewDownloads_Load(object sender, EventArgs e)
{
}
private void btnBrowse_Click(object sender, EventArgs e)
{
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.Close();
}
private void btnOK_Click(object sender, EventArgs e)
{
}
private void TextBoxURL_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter) //validate the URL when you press the Enter key
{
}
}
private bool CheckValidUrl() // validate from clipboard
{
string isUrl = Clipboard.GetText();
Uri uriResult;
bool result = Uri.TryCreate(isUrl, UriKind.Absolute, out uriResult)
&& (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps);
return result;
}
private bool WriteValidUrl() // validate manual input
{
string pattern2 = #"^http://www.[a-z].com$";
Match match = Regex.Match(TextBoxURL.Text, pattern2);
if (match.Success)
return true;
else
return false;
}
private new void TextChanged(object sender, EventArgs e)
{
if (CheckValidUrl() == true || WriteValidUrl() == true)
{
TextBoxFilename.Enabled = true;
TextBoxBrowse.Enabled = true;
btnOK.Enabled = true;
}
else
{
TextBoxFilename.Enabled = false;
TextBoxBrowse.Enabled = false;
btnOK.Enabled = false;
}
if (TextBoxURL.Text == "")
{
TextBoxFilename.Enabled = false;
TextBoxBrowse.Enabled = false;
btnOK.Enabled = false;
}
}
}
}
TextChanged fires on exit of the textbox. You might be looking for KeyDown or KeyUp, or KeyPress - probably KeyUp as this will allow you to capture what is in the textbox after the new character is added.
I've got the following code: -
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
namespace Testing.Event_Delegate
{
public partial class WebForm1 : System.Web.UI.Page
{
WebUserControl2 QT2;
WebUserControl3 QT3;
DataTable dtQuestionSet;
protected void Page_Init(object sender, EventArgs e)
{
dtQuestionSet = (DataTable)Session["DataTableW"];
}
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack == false)
{
Session["Counter"] = 0;
Session["QuestionCount"] = 0;
Session["CompletedInsp"] = false;
}
//check to see if the inspection process is complete and display pass\fail and log. Else carry on.
if (Convert.ToBoolean(Session["CompletedInsp"]) == true)
{
//Response.Write("Failed");
ModalPopupExtender2.Show();
return;
}
// all controls need to be rendered every page postback otherwise the rest of the code loses scope.
QT2 = (WebUserControl2)this.LoadControl("WebUserControl2.ascx");
UC2BtnClickEvent.MyEvent2 += new UC2BtnClickEvent.OnMyEvent2(ChecKResult);
QT3 = (WebUserControl3)this.LoadControl("WebUserControl3.ascx");
UC2BtnClickEvent.MyEvent3 += new UC2BtnClickEvent.OnMyEvent3(ChecKResult);
PlaceHolder2.Controls.Add(QT2);
PlaceHolder2.Controls.Add(QT3);
QT2.Visible = false;
QT3.Visible = false;
if (IsPostBack == false)
{
dtQuestionSet = new DataTable();
MakeDataTabledtQuestionSet();
}
else
{
dtQuestionSet = (DataTable)Session["DataTableW"];
}
Session["DataTableW"] = dtQuestionSet;
}
void ChecKResult(object sender, EventArgs e, string strTextBox, string strMyDescription)
{
Label1.Text = "You Answered: - " + strMyDescription;
if (Convert.ToInt32(Session["Counter"]) > Convert.ToInt32(Session["QuestionCount"]))
{
Session["CompletedInsp"] = true;
}
else
{
//carry on with inspection
Session["Counter"] = Convert.ToInt32(Session["Counter"]) + 1;
dtQuestionSet = (DataTable)Session["DataTableW"];
RunInspection();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("WebForm1.aspx");
}
protected void cmdStartInspection_Click(object sender, EventArgs e)
{
Session["Counter"] = 0;
GetQuestions();
}
protected void GetQuestions()
{
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["PromptedInspConnectionString"].ConnectionString);
conn.Open();
SqlCommand cmd = new SqlCommand("test.GetQuestions", conn);
SqlDataReader dr = null;
cmd.CommandType = CommandType.StoredProcedure;
//cmd.Parameters.Add(new SqlParameter("#Block1", cmbBlock1.Text));
dr = cmd.ExecuteReader();
while (dr.Read())
{
DataRow drQuestions = dtQuestionSet.NewRow();
drQuestions["QuestionText"] = dr[1].ToString();
drQuestions["ExpectedResponse"] = dr[2].ToString();
drQuestions["QuestionType"] = dr[3].ToString();
dtQuestionSet.Rows.Add(drQuestions);
}
Session["DataTableW"] = dtQuestionSet;
Session["QuestionCount"] = dtQuestionSet.Rows.Count;
conn.Close();
RunInspection();
}
protected void RunInspection()
{
switch (dtQuestionSet.Rows[Convert.ToInt32(Session["counter"])][2].ToString())
{
case "1":
QT2.QuestionText = dtQuestionSet.Rows[0][0].ToString();//"I'm asking a question 1";
QT2.Visible = true;
break;
case "2":
QT3.QuestionText = dtQuestionSet.Rows[0][0].ToString();//"I'm asking a question 2";
QT3.Visible = true;
break;
}
}
private void MakeDataTabledtQuestionSet()
{
dtQuestionSet.Columns.Add("QuestionText");
dtQuestionSet.Columns.Add("ExpectedResponse");
dtQuestionSet.Columns.Add("QuestionType");
}
}
}
When I click on the button on a usercontrol with the code: -
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Testing.Event_Delegate
{
public partial class WebUserControl2 : System.Web.UI.UserControl
{
string questionAsked;
public string QuestionText
{
set { questionAsked = value; }
get { return questionAsked; }
}
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = QuestionText;
TextBox1.Focus();
}
protected void Button1_Click(object sender, EventArgs e)
{
UC2BtnClickEvent bEvent = new UC2BtnClickEvent();
bEvent.onRefresh2Event3(sender, e, TextBox1.Text, TextBox1.Text );
TextBox1.Text = "";
}
}
}
It runs the procedure CheckResults 3 times on the aspx page when I only need it to run once.
UC2BtnClickEvent.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Testing.Event_Delegate
{
public class UC2BtnClickEvent
{
public delegate void OnMyEvent2(object sender, EventArgs e, string strTextBox, string strMyDescription);
public static event OnMyEvent2 MyEvent2;
public virtual void onRefresh2Event2(object sender, EventArgs e, string strTextBox, string strMyDescription)
{
if (MyEvent2 != null)
{
MyEvent2(sender, e, strTextBox, strMyDescription);
}
}
public delegate void OnMyEvent3(object sender, EventArgs e, string strTextBox, string strMyDescription);
public static event OnMyEvent3 MyEvent3;
public virtual void onRefresh2Event3(object sender, EventArgs e, string strTextBox, string strMyDescription)
{
if (MyEvent3 != null)
{
MyEvent3(sender, e, strTextBox, strMyDescription);
}
}
}
}
What have I done wrong to make this happen please as it should only run once.
So I'm trying to find out and breaking each method while running my codes, and I still can't find why setTempID is always 0, I already assigned a value to it.
Here is my code.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.Sql;
using System.Data.SqlClient;
//imports
using DHELTASSys.DataAccess;
using DHELTASSys.Modules;
using DHELTASSys.AuditTrail;
namespace Enrollment
{
public partial class HRLogin : Form
{
HRModuleBL obj = new HRModuleBL();
DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();
public HRLogin()
{
InitializeComponent();
}
private void txtLogin_Click(object sender, EventArgs e)
{
obj.Emp_id = int.Parse(txtEmpID.Text);
audit.Emp_id = int.Parse(txtEmpID.Text);
obj.Password = txtPassword.Text;
if (obj.AccountEnrollmentLogin().Rows.Count == 0)
{
MessageBox.Show("Username and Password is incorrect!");
}
else if (obj.CheckIfHRManager().Rows.Count == 0)
{
MessageBox.Show("You are not allowed to access this system!");
}
else
{
CreateAccount frm = new CreateAccount();
frm.FormClosed += new FormClosedEventHandler(frm_FormClosed);
audit.AddAuditTrail("Has logged in into the Fingerprint Enrollment System.");
frm.setEmpID = int.Parse(txtEmpID.Text);
frm.Show();
this.Hide();
}
}
void frm_FormClosed(object sender, FormClosedEventArgs e)
{
this.Show();
}
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
and here is the other form
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
//imports
using DHELTASSys.AuditTrail;
using DHELTASSys.Modules;
namespace Enrollment
{
delegate void Function(); // a simple delegate for marshalling calls from event handlers to the GUI thread
public partial class CreateAccount : Form
{
HRModuleBL obj = new HRModuleBL();
DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();
private int emp_id;
public int setEmpID
{
set { emp_id = value;}
}
public CreateAccount()
{
InitializeComponent();
}
private void CloseButton_Click(object sender, EventArgs e)
{
Close();
}
private void OnTemplate(DPFP.Template template)
{
this.Invoke(new Function(delegate()
{
Template = template;
VerifyButton.Enabled = SaveButton.Enabled = (Template != null);
if (Template != null)
MessageBox.Show("The fingerprint template is ready for verification and saving", "Fingerprint Enrollment");
else
MessageBox.Show("The fingerprint template is not valid. Repeat fingerprint enrollment.", "Fingerprint Enrollment");
}));
}
private DPFP.Template Template;
private void EnrollButton_Click(object sender, EventArgs e)
{
EnrollmentForm Enroller = new EnrollmentForm();
Enroller.OnTemplate += this.OnTemplate;
Enroller.ShowDialog();
}
private void SaveButton_Click(object sender, EventArgs e)
{
obj.Last_name = txtLastname.Text;
obj.First_name = txtFirstName.Text;
obj.Middle_name = txtMiddleName.Text;
obj.Position_name = cmbPosition.Text;
obj.Company_name = cmbCompany.Text;
obj.Password = txtTempPassword.Text;
obj.Department_name = cmbDepartment.Text;
if (obj.Last_name == string.Empty) //Validation for empty texts
{
MessageBox.Show("Last name can't be empty!");
} else if (obj.First_name == string.Empty)
{
MessageBox.Show("First name can't be empty!");
}
else if (obj.Middle_name == string.Empty)
{
MessageBox.Show("Middle name can't be empty!");
}
else if (obj.Position_name == string.Empty)
{
MessageBox.Show("Position name can't be empty!");
}
else if (obj.Department_name == string.Empty)
{
MessageBox.Show("Deparment can't be empty!");
}
else if (obj.Company_name == string.Empty)
{
MessageBox.Show("Company name can't be empty!");
}
else if (obj.Password == string.Empty)
{
MessageBox.Show("Password can't be empty!");
}
else if (txtConfirmTempPassword.Text == string.Empty)
{
MessageBox.Show("Please verify your input password!");
}
else
{
if (txtTempPassword.Text != txtConfirmTempPassword.Text)
{
MessageBox.Show("Password does not match", "Password Mismatch",
MessageBoxButtons.OK);
}
else
{
MemoryStream fingerprintData = new MemoryStream();
Template.Serialize(fingerprintData);
fingerprintData.Position = 0;
BinaryReader br = new BinaryReader(fingerprintData);
Byte[] bytes = br.ReadBytes((Int32)fingerprintData.Length);
audit.Emp_id = emp_id;
obj.Biometric_code = bytes;
obj.AddAccountSetTempPassword();
}
}
}
private void VerifyButton_Click(object sender, EventArgs e)
{
VerificationForm Verifier = new VerificationForm();
Verifier.Verify(Template);
}
}
}
I'm setting it to frm.setEmpID so that I could get it from another form.
Thanks for the help man.
Perhaps in your SaveButton_Click event in the CreateAccount form you need to set also the Emp_Id variable of the obj instance defined inside that form (as you have done in the instance of the HRModuleBL defined in the first form).
private void SaveButton_Click(object sender, EventArgs e)
{
.....
audit.Emp_id = emp_id;
obj.Emp_id = emp_id;
obj.Biometric_code = bytes;
obj.AddAccountSetTempPassword();
.....
}