i have a problem:
I want to make little Note Application for personal use. In this little Scratchpad i have a settings menu with a combobox for all the installed Fonts.
FontFamilyDrop.ItemsSource = Fonts.SystemFontFamilies;
Now i want to save and read this value in my settings.ini file.
Writing the value works perfectly by converting the SelectedItem to a string.
When the user opens the settings menu, i want to preload the current font and i dont know how to set the SelectedItem property by just having a string for lets say "Lucida Console".
I've tried this one now:
for (int i = 2; i <= FontFamilyArray.GetLength(0); i++)
{
Title = FontFamilyArray[i].ToString();
}
The problem is that it doesnt work. It throws an exception.
Now the thing that makes me confused is, that when i fill in "2" instead of i like this:
for (int i = 2; i <= FontFamilyArray.GetLength(0); i++)
{
Title = FontFamilyArray[2].ToString();
}
This way it works perfectly... Does anyone know why?
Related
I'm working on a small program as part of my A Level Computing course that is designed to track orders. It is written in C# using the Windows Forms.
I am having an issue where I enter all the information for a new order and then press OK and it should update the ListView with the information. I have my ListView in Detail view with 4 columns but nothing ever gets added to the ListView. The section of code that should add the items to the ListView is being executed and is not throwing any errors or causing the program to crash but nothing is being added. Its weird because I am using the exact same method that I used in my little prototype mock up but for some reason now it is not working.
All the things I've found on here or on the internet seem to suggest its an issue with the View mode of the ListView and I've tried modifying this property to no avail.
Any ideas why this section of code is refusing to add anything to the ListView?
//Create an array to store the data to be added to the listbox
string[] orderDetails = { Convert.ToString(id + 1), rNameBox.Text, dateBox.Value.ToString(), orderBox.Text };
//DEBUGGING
Console.WriteLine(orderDetails[0]);
Console.WriteLine(orderDetails[1]);
Console.WriteLine(orderDetails[2]);
Console.WriteLine(orderDetails[3]);
//END DEBUGGING
//Add the order info to the ListView item on the main form
var listViewItem = new ListViewItem(orderDetails);
ths.listView1.Items.Add(listViewItem);
If you need any more information just say. Apologies if this is in the wrong format or something this is my first time here.
Your problem is that your ListViewItem contains a string array and it has no useful way of displaying it.
What you should be doing (there are a number of ways of doing this, but here's one) is creating a class, OrderDetail, with an Id, a Name, a Date, and so on. Give it a ToString() method (public override string ToString()) which returns what you want to display, e.g.:
public override string ToString()
{
return this.Name;
}
Create an instance of OrderDetail and set its properties. Create ListViewItem giving it the OrderDetail instance and add to the ListView. Repeat for as many OrderDetail instances you want.
Cheers -
Added: code which works:
int id = 12;
string rNameBoxText = "rName";
DateTime dateBoxValue = DateTime.Now;
string orderBoxText = "order";
string[] orderDetails = { Convert.ToString(id + 1), rNameBoxText, dateBoxValue.ToString(), orderBoxText };
//DEBUGGING
Console.WriteLine(orderDetails[0]);
Console.WriteLine(orderDetails[1]);
Console.WriteLine(orderDetails[2]);
Console.WriteLine(orderDetails[3]);
//END DEBUGGING
this.listView1.Columns.Clear();
this.listView1.Columns.Add("Id");
this.listView1.Columns.Add("rName");
this.listView1.Columns.Add("Date");
this.listView1.Columns.Add("Order");
this.listView1.View = View.Details;
//Add the order info to the ListView item on the main form
var listViewItem = new ListViewItem(orderDetails);
this.listView1.Items.Add(listViewItem);
I'm stuck on the SetBinding method.
I would like to have 2 kinds of icons in the table, there will be a boolean property and the shown icon will depend on this property. Here is an example :
The problem is that I canĀ“t change the icon. I've tried to google it for about 3 hours, without success.
My idea was to put there Image control and than change the source dependenig on property, but i couldnt find out how to change image source.
So I tryed to create custom sample with image template and SetBinding and here I am stuck...
int index = 0;
foreach (var item in this.VidContentItems) {
if (item.Active == false) {
this.FindControlInCollection("TrueOrFalse",
this.VidContentItems.ElementAt(index)).SetBinding(?????????);
}
index++;
}
Or maybe I'm totally wrong...
OK i solved it like this: I created a table where was just one image item and i add a control image viewer to the grid of the target table, then i made loop and if the value was false i hided the control.. looks easy but this wasnt possible when i was trying to put there just image control, becouse visibility couldnt be changed for specific control , only for all controls...that stacked me a lot..never use image control!!!
partial void VidContentItemsGrid_Activated() {
int index = 0;
foreach (var item in this.VidContentItems) {
if (item.Active == false) {
this.FindControlInCollection("TrueIconInd", this.VidContentItems.ElementAt(index)).IsVisible = false;
}
index++;
}
}
I'm currently working on a small side project as a way of getting used to Forms in Visual Studio 2012, as I usually only work with Console Applications. My current layout is designed to use tabs, and the user is to specify how many of the tabs they need for this application. They then fill out some information and it will be formatted and output to a file at a location specified by the user. On to the questions.
In order to stop duplicate tabs from existing, I'm using the following:
private void comboTabs_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboSkills.SelectedIndex == 0)
{
tabControl1.TabPages.Remove(tab8);
tabControl1.TabPages.Remove(tab7);
tabControl1.TabPages.Remove(tab6);
tabControl1.TabPages.Remove(tab5);
tabControl1.TabPages.Remove(tab4);
}
//repeat for Index 1, 2 and so on
}
There will always be a minimum of 3 tabs, so the first selection on the combo box removes tabs 4 through 8. The next selection does the same, but then adds tab4 back again. This goes on for the following selections. Is there any way I can do this more conveniently?
Second question, each tab has a series of text boxes and combo boxes that users are to select information from. The problem I'm having is that I need to identify how many tabs the user has selected and then only pull information from those tabs. I'm aware that I can get the number of tabs with:
int numberoftabs = tabControl1.TabCount;
But after that I can't seem to read the information from them. I'm intending to do
for (int i = 0; i < numberoftabs; i++)
{
//get textbox text of tab i and so on
}
Is there any way I can do this? I was hoping to use a tab layout since I like my current layout very much. If it makes a difference, all the tabs have the same layout, and share a naming convention such as tab 1 text box 1 is textTab1Name, tab 2 text box 2 is textTab2Name and so on.
For the first part of your question, you can handle all cases with this piece of code:
var tabCount = 5 - comboBox1.SelectedIndex;
for (var i = 0; i < tabCount; i++)
{
tabControl1.TabPages.RemoveAt(7-i);
}
For the second part you will have to create this method:
private T GetControl<T>(string name) where T : Control
{
return (T) this.Controls.Find(name, true).FirstOrDefault();
}
Then you can write your text retrieval loop like this:
for (int i = 0; i < numberoftabs; i++)
{
//get textbox text of tab i and so on
TextBox textBox1 = GetControl<TextBox>("textTab" + i + "Name");
...
etc..
}
I'm not very experienced on c#. I'm working with winforms and I'm looking for a way to create something like a list of elements with this template , something like the autocompletion list of visual studio.
Is it possible to do? Shall I use listbox or listview?
EDIT
Sorry my question wasn't clear I don't want to create an autocomplete but what i want to create is something like this a list of things with an icon next to the text of that thing.
As I understand from your question, you can create custom UserControl or create a Form and put ListBox in it. If you use From be sure that you change border style layout, just set it to none. After creation for use it you should create form and show it where you want like this:
FrmAutoComplete x = new FrmAutoComplete();
x.Show();
you can put this form in ToolTipItem and show it.
Good luck.
THis is a quick and dirty example of using images in your Listview control. Since I don;t have a lot of information about what you plan to do, I tried to keep is simple.
In short, you need to load some images into one of the ImageLists (Large or Small) built into the Listview control and assign them keys so that you can assign them to specific list items as you add them.
The trick to this is determining which image to use for a specific list item (assuming there are different images assigned to different list items depending on some differentiating factor. For this example, I used an arbitrary assignment of "cars" or "trucks," and simply decided that the first five items in the list would be cars, and the last five would be trucks. I then assigned each image appropriately, using the image key as I added each listview item. You can do this for more complex scenarios, and when using the image key, it does not matter what order the items are added.
For this use case, you will want to create or use images with dimensions of 16 x 16 pixels. I went ahead and added two images to my project resource file, then simply accessed them using the project Properties.Resources name space. There are other ways to do this as well, but this is the most convenient for me.
Hope that helps.
public partial class Form1 : Form
{
static string CAR_IMAGE_KEY = "Car";
static string TRUCK_IMAGE_KEY = "Truck";
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.SetupListview();
this.LoadListView();
}
private void SetupListview()
{
var imgList = new ImageList();
imgList.Images.Add("Car", Properties.Resources.jpgCarImage);
imgList.Images.Add("Truck", Properties.Resources.jpgTruckImage);
var lv = this.listView1;
lv.View = View.List;
lv.SmallImageList = imgList;
}
private void LoadListView()
{
for(int i = 1; i <= 10; i++)
{
string currentImageKey = CAR_IMAGE_KEY;
if(i > 5) currentImageKey = TRUCK_IMAGE_KEY;
var item = this.listView1.Items.Add("Item" + i.ToString(), currentImageKey);
}
}
I'm calling a public method from another class. It takes in a List as a parameter, and goes through the list printing out each item into a text field. The problem is the text field is remaining empty!. I've checked that the list is populated by outputing the item to the console before I put it into the text box, and the text is coming up fine there.
The list contains strings, and should output each string to the textfield followed by a semi colon.
This is the method which is being called:
public void fillAttachment(List<string> attachList)
{
for (int i = 0; i < attachList.Count; i++)
{
Console.WriteLine("List: " + attachList[i]);
txtAttach.Text += attachList[i] + ";";
}
}
I would solve it in this way:
foreach(var attach in attachList)
{
Console.WriteLine(attach);
txtAttach.AppendText(string.Format("{0};", attach));
}
Setting the text property on a text box and it not displaying could be one of the following:
You are not looking at the same control as you are setting the text in
Could you have instantiated a second copy of the form object and it is this form that you are setting the txtAttach text property in?
Could the control that you are expecting to be populated be a different one? Right click the text box that you want the text to appear in click properties and check the name.
Something else is clearing the textbox after you set it
Right click the txtAttach.Text and click Find All References, this will show you all the places that the Text property is referenced - written and read - in your project. This is a very useful way to locate other interaction with this control.
Fomatting is making the text box appear empty
Is the Font too small, or in the same colour as the background. Can you select the text in the text box?
The easiest way to test all of the above is to create a new text control on your form with a different name, change your code to populate it, check that it is indeed populated, then replace the old one.
As an aside, you could also reduce the code with a single line as follows:
public void fillAttachment(List<string> attachList)
{
txtAttach.Text = String.Join(";", attachList.ToArray());
}
Although this obviously skips out the console write line function.
Not sure why yours doesn't work but I would have done it like this...
public void fillAttachment(List<string> attachList)
{
string result = "";
//OR (if you want to append to existing textbox data)
//string result = txtAttach.Text;
for (int i = 0; i < attachList.Count; i++)
{
Console.WriteLine("List: " + attachList[i]);
result += attachList[i] + ";";
}
txtAttach.Text = result;
}
Does that work for you? If not then there is something else very wrong that is not obvious from your code