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  • WinForms prints to default printer even if it's not available/connected

    - by Valentein
    How can I determine if printer is connected? Typically this application prints to the default printer but in some cases that printer may not be available. If so I don't want the job sent to it's queue but rather printed to another available printer. I understand the PinterSettings.InstalledPrinters property. Does PrintDocument.PrinterSettings.IsValid return false if a printer is not available? Does WPF provide this kind of functionality? My problem is different than Printing problem in C# windows app - Always prints to default printer

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  • Problems when using IconAlignment with WinForms ErrorProvider

    - by Irina
    Hi, I have a ComboBox that has an associated ErrorProvider in the user control it belongs to. When an error happens, I want to display an icon on the left of the combo. However, no matter what value I set as IconAlignment for my combo, the icon gets displayed on the right. Do you guys have any idea what could be wrong here? Thanks for any help.

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  • prevent the designer from calling a getter (VS 2008, WinForms)

    - by LLEA
    hi, I have a simple UserControl containing a ComboBox which is empty at first. The setter for that CB adds items to it and the getter returns the selected item. When adding this UC to a Form, the designer automatically calls the getter for the CB which is empty. The method to fill up the CB with items is called later. I can think of one or two ways to bypass this problem by "messing around" in the code. But before I start that I'd like to ask you if there is a way to stop the designer from calling the getter method. Maybe with a attribute similar to Browsable or Bindable? thx

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  • Whats the KeyCode for overwriting a text in TextBox in winforms

    - by Ragha J
    I have a custom control which extends from TextBox. In the KeyDown event of the control I have access to the KeyCode property of keyEventArgs If the text in the textbox is selected and some other text is typed on top of it, the keyCodes that I am getting in the KeyDown event are different each time and in the KeyPress event I get the actual value. For ex: If the textbox has value 1234 and now I select 1234 and type 5 on top of it, I want to to be able to know in any of the events by some key combination that the old value 1234 is gone and the new value of the textbox is 5.

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  • How to test localized winforms application?

    - by Sun
    Background: I have created sample windows application for learning to implement localization. My each form has two RESX file. One for Bulgaria and one for French(Belgium). It has default culture English(XX) To test locally currently I am programmatically changing UICulture i.e. Thread.CurrentThread.CurrentUICulture = new CultureInfo("fr-BE"); And it works fine. Problem: How can I test without forcing the UI Culture programatically? I have tried changing Control Panel Regional Options Standard and Formats to French(Belgium). That made changes to DatePickerControl and now it display the dates French. However I can still see the Button text in English, where as if I test by injecting CultureInfo programmatically it changes to french. If I am able to change the standard and formats to French do I still need to Install Multilingual User Interface Pack (MUI)?

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  • Problem with dynamic create tabPages in Winforms TabControl

    - by mirt
    I want to create dynamic tabPages in TabControl. In each tabPage I create dataGridView and i want to fill the entire space of each tabPage with this dataGrid. Here is code, where i do this: private void tabControlMutants_SelectedIndexChanged(object sender, EventArgs e) { DataGridView dgw = new DataGridView(); DataGridViewTextBoxColumn testCaseCol = new System.Windows.Forms.DataGridViewTextBoxColumn(); DataGridViewTextBoxColumn resultCol = new System.Windoows.Forms.DataGridViewTextBoxColumn(); // // dataGridView1 // dgw.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; dgw.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] { testCaseCol, resultCol}); dgw.Location = new System.Drawing.Point(3, 3); dgw.Name = "dataGridView1"; dgw.AutoSize = true; dgw.Dock = System.Windows.Forms.DockStyle.Fill; dgw.TabIndex = 0; // // TestCaseColumn // testCaseCol.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill; testCaseCol.HeaderText = "Test Case"; testCaseCol.Name = "TestCaseColumn"; // // ResultColumn // resultCol.HeaderText = "Result"; resultCol.Name = "ResultColumn"; tabControlMutants.TabPages[(sender as TabControl).SelectedIndex].Controls.Add(dgw); ((System.ComponentModel.ISupportInitialize)(dgw)).EndInit(); //fill dataGridView } But it doesn't work, becouse when i resize the main window, data gridView doesn.t change its size (although the dock property is set to fill). Any ideas?

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  • Embedding a File Explorer instance in a WinForms app form

    - by Unsliced
    My (C#, .NET 3.5) app generates files and, in addition to raising events that can be caught and reacted to, I want to display the target folder to the user in a form. The file-list is being shown within the same form as other information. I'm using an instance of the WebBrowser control (System.Windows.Forms.WebBrowser), then navigating to the folder. This shows some default view of the explorer window, with the file summary panel on the left and the files in the 'Tiles' (large icon and text) view. e.g. wb.Navigate(@"c:\path\to\folder\"); I'd like to suppress the panel and to view the file list in the Details view. The user can get to this via a right-click, context menu, but I'd like it to come up automatically. I'd rather not have to build my own TreeView, DataGridView or whatever; the WebBrowser control does all the updating and re-sorting and whatnot 'for free'. Does anybody have a better suggestion? A different control to use or some additional arguments to pass to the control? And if I could trap events (e.g. files being selected/renamed/double-clicked, etc.) then all the better!

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  • Adding rows to a data-bound DataGridView [Winforms]

    - by Mishko
    I want to bind a table from a database to a DataGridView, but I want to also add one more row with a sum of the values in the columns with indexes 3,4,7,8,9... How can I do that? Thanks! DataTable table1 = new DataTable(); double brutoUkupno1 = 0; double porezUkupno1 = 0; double doprinosUkupno1 = 0; double netoUkupno1 = 0; double doprinosTeretUkupno1 = 0; double topliObrokUkupno1 = 0; double regresUkupno1 = 0; Connection con = new Connection(); table1 = con.boundTable(month, Convert.ToInt32(year)); //This is method which returns DataTable table1.Rows.Add(null, null, null, null, null, null, null, null, null, null, null, null, null, null); table1.Rows.Add(null, null, null, null, null, null, null, null, null, null, null, null, null, null); dgv2.Visible = true; dgv2.DataSource = table1; for (int i = 0; i < dgv2.RowCount - 2; i++) { topliObrokUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[7].Value); regresUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[8].Value); brutoUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[9].Value); porezUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[10].Value); doprinosUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[11].Value); netoUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[12].Value); doprinosTeretUkupno1 += Convert.ToDouble(dgv2.Rows[i].Cells[13].Value); //Now I am having problems with this below, putting things above to dgv2 : } dgv2.Rows[dgv2.Rows.Count - 1].Cells[0].Value = "Ukupno"; dgv2.Rows[dgv2.Rows.Count - 1].Cells[3].Value = month.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[4].Value = year.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[7].Value = topliObrokUkupno1.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[8].Value = regresUkupno1.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[9].Value = brutoUkupno1.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[10].Value = porezUkupno1.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[11].Value = doprinosUkupno1.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[12].Value = netoUkupno1.ToString(); dgv2.Rows[dgv2.Rows.Count - 1].Cells[13].Value = doprinosTeretUkupno1.ToString(); dgv2.Rows[dgv2.RowCount - 2].Height = 3; dgv2.Rows[dgv2.RowCount - 2].DefaultCellStyle.BackColor = Color.Black;

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  • Cross-thread Winforms control editing

    - by Motig
    Hey, how can I edit the text in a windows form element if the code that is editing the text 'belongs' to a seperate thread from the one that contains the windows form? I get the exception: Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it was created on. Thank you.

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  • Bring Winforms control to front

    - by Nathan
    Are there any other methods of bringing a control to the front other than control.BringToFront()? I have series of labels on a user control and when I try to bring one of them to front it is not working. I have even looped through all the controls and sent them all the back except for the one I am interested in and it doesn't change a thing. Here is the method where a label is added to the user control private void AddUserLabel() { UserLabel field = new UserLabel(); ++fieldNumber; field.Name = "field" + fieldNumber.ToString(); field.Top = field.FieldTop + fieldNumber; field.Left = field.FieldLeft + fieldNumber; field.Height = field.FieldHeight; field.Width = field.FieldWidth; field.RotationAngle = field.FieldRotation; field.Barcode = field.BarCoded; field.HumanReadable = field.HumanReadable; field.Text = field.FieldText; field.ForeColor = Color.Black; field.MouseDown += new MouseEventHandler(label_MouseDown); field.MouseUp += new MouseEventHandler(label_MouseUp); field.MouseMove += new MouseEventHandler(label_MouseMove); userContainer.Controls.Add(field); SendLabelsToBack(); //Send All labels to back userContainer.Controls[field.FieldName].BringToFront(); } Here is the method that sends all of them to the back. private void SendLabelsToBack() { foreach (UserLabel lbl in userContainer.Controls) { lbl.SendToBack(); } }

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  • Winforms Controlling Forms

    - by jack london
    How can i control all my forms from main () static void Main() { Form1 frm1 = new Form1(); Form1 frm2 = new Form1(); Form1 frm3 = new Form1(); frm1.Show(); while (frm1.Button.Clicked) { frm2.Show(); frm3.Show(); } } form.ShowDialog () helps much but the execution stack can overflow. Form.Show and Form.Hide methods runs when an application class has been set. In Application.Run (Form) way there's always a main form. and i dont want this one. Any other approach you use in this problem

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  • silverlight 3.0 communication with winforms

    - by abusemind
    I would like to create a winform on the client side for interaction with Silverlight 3.0. The basic idea is using the winform browser. I definitely need both the directions of communication. Would it be impossible by using JavaScript as a midware for the interaction or some better ways? Or is there any new features of Silverlight 3.0 supported for this kind of winform application communication? The original one is one the client's browser to run but now I would like to migrate it to the winform application. For the sake of time-saving, please don't mention about the WPF because of the gap between WPF and the Silverlight.

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  • How to make tooltip move with mouse (winforms)

    - by BlueRaja The Green Unicorn
    I want it to move when the mouse moves, and disappear when the pointer isn't over the label. This doesn't work: private void lblRevisionQuestion_MouseMove(object sender, MouseEventArgs e) { toolTip1.Show("test", this, PointToClient(MousePosition), Int32.MaxValue); } private void lblRevisionQuestion_MouseLeave(object sender, EventArgs e) { toolTip1.Hide(this); } As soon as the tooltip appears, it steals focus away from the form, evoking MouseLeave. Then the tooltip hides, and the pointer is once again over the label, invoking MouseMove. This results in a choppy, flashing tooltip. Is there any way to do this?

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  • Winforms, creating padding when using Dock properties.

    - by Zka
    How do I add padding, or some space between the textboxes when using dockstyle.top property? for(int i =0; i< 10; i++) { textboxes[i] = new TextBox(); textboxes[i].Dock = DockStyle.Top; mypanel.Controls.Add(textboxes[i]); } The code above puts textboxes right beneath each other. Can't figure this out without using mass panels or fixed positioning. How to do the following? 1) I would like to add around 10-20pixels between boxes. 2) How to change size (height,width) of the textboxes, since when using dockstyle.top it ignores the size commands ?

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  • Switching DataSources in ReportViewer in WinForms

    - by Mike Wills
    I have created a winform for the users to view view the many reports I am creating for them. I have a drop down list with the report name which triggers the appropriate fields to display the parameters. Once those are filled, they press Submit and the report appears. This works the first time they hit the screen. They can change the parameters and the ReportViewer works fine. Change to a different report, and the I get the following ReportViewer error: An error occurred during local report processing. An error has occurred during the report processing. A data source instance has not been supplied for the data source "CgTempData_BusMaintenance". As far as the process I use: I set reportName (string) the physical RDLC name. I set the dataSource (string) as the DataSource Name I fill a generic DataTable with the data for the report to run from. Make the ReportViewer visible Set the LocalReport.ReportPath = "Reports\\" = reportName; Clear the LocalReport.DataSources.Clear() Add the new LocalReport.DataSources.Add(new ReportDataSource(dataSource, dt)); RefreshReport() on the ReportViewer. Here is the portion of the code that setups up and displays the ReportViewer: /// <summary> /// Builds the report. /// </summary> private void BuildReport() { DataTable dt = null; ReportingCG rcg = new ReportingCG(); if (reportName == "GasUsedReport.rdlc") { dataSource = "CgTempData_FuelLog"; CgTempData.FuelLogDataTable DtFuelLog = rcg.BuildFuelUsedTable(fromDate, toDate); dt = DtFuelLog; } else if (reportName == "InventoryCost.rdlc") { CgTempData.InventoryUsedDataTable DtInventory; dataSource = "CgTempData_InventoryUsed"; DtInventory = rcg.BuildInventoryUsedTable(fromDate, toDate); dt = DtInventory; } else if (reportName == "VehicleMasterList.rdlc") { dataSource = "CgTempData_VehicleMaster"; CgTempData.VehicleMasterDataTable DtVehicleMaster = rcg.BuildVehicleMasterTable(); dt = DtVehicleMaster; } else if (reportName == "BusCosts.rdlc") { dataSource = "CgTempData_BusMaintenance"; dt = rcg.BuildBusCostsTable(fromDate, toDate); } // Setup the DataSource this.reportViewer1.Visible = true; this.reportViewer1.LocalReport.ReportPath = "Reports\\" + reportName; this.reportViewer1.LocalReport.DataSources.Clear(); this.reportViewer1.LocalReport.DataSources.Add(new ReportDataSource(dataSource, dt)); this.reportViewer1.RefreshReport(); } Any ideas how to remove all of the old remaining data? Do I dispose the object and recreate it?

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  • Override default behavior of SPACE key in .net WinForms ListView

    - by Axarydax
    Hello, I'd like to implement some custom behavior of Space key in a ListView. Basically I'd like to toggle selected status of the item under cursor - that should be fairly simple this.FocusedItem.Selected = !this.FocusedItem.Selected; but alas, it also does the default action, which is to select the focused item. This way I am unable to 'unselect' the focused item. I've looked for similar problems and they suggest using PreviewKeyDown event, in which I would process the key and disallow the ListView to do its default action. But the PreviewKeyDown event argument has no "handled" property, so I cannot 'eat' this key.

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  • WinForms button position - not aligned as it should

    - by Zka
    Adding some gui modifications and I want to have a button which is 10pixels away from the forms left and right border. With this code the right border of the button is around 20-30 pixel outside the form window. Why is that? How can I position my button to be exactly 10pixels away from the form borders ? int margin = 10; meny1 = new Button(); meny1.Top = 50; meny1.Left = margin; meny1.Size = new Size(this.Width - (2*margin), 30);

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  • Problem with persisting interface collection at design time in winforms, .net

    - by Jules
    The easiest way to explain this problem is to show you some code: Public Interface IAmAnnoyed End Interface Public Class IAmAnnoyedCollection Inherits ObjectModel.Collection(Of IAmAnnoyed) End Class Public Class Anger Implements IAmAnnoyed End Class Public Class MyButton Inherits Button Private _Annoyance As IAmAnnoyedCollection <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property Annoyance() As IAmAnnoyedCollection Get Return _Annoyance End Get End Property Private _InternalAnger As Anger <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property InternalAnger() As Anger Get Return Me._InternalAnger End Get End Property Public Sub New() Me._Annoyance = New IAmAnnoyedCollection Me._InternalAnger = New Anger Me._Annoyance.Add(Me._InternalAnger) End Sub End Class And this is the code that the designer generates: Private Sub InitializeComponent() Dim Anger1 As Anger = New Anger Me.MyButton1 = New MyButton ' 'MyButton1 ' Me.MyButton1.Annoyance.Add(Anger1) // Should be: Me.MyButton1.Annoyance.Add(Me.MyButton1.InternalAnger) ' 'Form1 ' Me.Controls.Add(Me.MyButton1) End Sub I've added a comment to the above to show how the code should have been generated. Now, if I dispense with the interface and just have a collection of Anger, then it persists correctly. Any ideas?

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  • C# WinForms & SQL bindings

    - by vent
    I have a MSSQL database with many tables and relations. I want to bind it to my C# GUI application with text- and combo-boxes. Which one is the best way to do it: (1) Everything done manually by own classes and methods: Import data to dataset or to many datatables separately, then create dictionaries to comboboxes, manually retrieve data to textboxes and create a sql statement if update action will be invoked, or, (2) Done automatically by VS: Connect my controls with BindingSource and BindingNavigator if needed. I know how to deal with the first one, but if the second way would be better, my question is — how to achieve it? I haven't dealt with automatically created databindings and I don't know how to tell to DataBinding property (Key|Value|Text) about relations and current row's ID. And what is the method to cancel/update changes in all GUI elements? I need a simple solution for this scenario. It's a quick-and-dirty academical project, which must only "work" and be as fast implemented as it can. Thanks

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  • Problem with persisting inteface collection at design time in winforms, .net

    - by Jules
    The easiest way to explain this problem is to show you some code: Public Interface IAmAnnoyed End Interface Public Class IAmAnnoyedCollection Inherits ObjectModel.Collection(Of IAmAnnoyed) End Class Public Class Anger Implements IAmAnnoyed End Class Public Class MyButton Inherits Button Private _Annoyance As IAmAnnoyedCollection <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property Annoyance() As IAmAnnoyedCollection Get Return _Annoyance End Get End Property Private _InternalAnger As Anger <DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _ Public ReadOnly Property InternalAnger() As Anger Get Return Me._InternalAnger End Get End Property Public Sub New() Me._Annoyance = New IAmAnnoyedCollection Me._InternalAnger = New Anger Me._Annoyance.Add(Me._InternalAnger) End Sub End Class And this is the code that the designer generates: Private Sub InitializeComponent() Dim Anger1 As Anger = New Anger Me.MyButton1 = New MyButton ' 'MyButton1 ' Me.MyButton1.Annoyance.Add(Anger1) // Should be: Me.MyButton1.Annoyance.Add(Me.MyButton1.InternalAnger) ' 'Form1 ' Me.Controls.Add(Me.MyButton1) End Sub I've added a comment to the above to show how the code should have been generated. Now, if I dispense with the interface and just have a collection of Anger, then it persists correctly. Any ideas?

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  • Preloading Winforms

    - by msarchet
    I am currently working on a project where we have a couple very control heavy user controls that are being used inside a MDI Controller. This is a Line of Business app and it is very data driven. The problem that we were facing was the aforementioned controls would load very very slowly, we dipped our toes into the waters of multi-threading for the control loading but that was not a solution for a plethora of reasons. Our solution to increasing the performance of the controls ended up being to 'pre-load' the forms onto a hidden window, create a stack of the existing forms, and pop off of the stack as the user requested a form. Now the current issue that I'm seeing that will arise as we push this 'fix' out to our testers, and the ultimately our users is this: Currently the 'hidden' window that contains the preloaded forms is visible in task manager, and can be shut down thus causing all of the controls to be lost. Then you have to create them on the fly losing the performance increase. Secondly, when the user uses up the stack we lose the performance increase (current solution to this is discussed below). For the first problem, is there a way to hide this window from task manager, perhaps by creating a parent form that encapsulates both the main form for the program and the hidden form? Our current solution to the second problem is to have an inactivity timer that when it fires checks the stacks for the forms, and loads a new form onto the stack if it isn't full. However this still has the potential of causing a hang in the UI while it creates the forms. A possible solutions for this would be to put 'used' forms back onto the stack, but I feel like there may be a better way.

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  • Winforms: Embedded NumericUpDown control inside ListView

    - by tanthiamhuat
    say in my ListView say with 4 columns (Description, Price Per Unit, Quantity, Total Price). I would like to make the third column editable, and embedded NumericUpDown control for the Quantity column. Is it possible? And when the Quantity is updated via the NumericUpDown control, the Total Price is also being updated based on Total Price = Quantity * Price Per Unit. is the above achievable? any code samples would be greatly appreciated.

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