We Keep Coding

C# - How to load text from text file in a listbox into a richTextBox?

Now solved. Thanks for your answers!
This is my code right now:
//Listbox scripts is the name of my folder
private void Form1_Load(object sender, EventArgs e)
{
foreach (var file in Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory + #"Listbox scripts"))
{
string file2 = file.Split('\\').Last();
listBox1.Items.Add(file2);
}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
webBrowser1.Document.InvokeScript("SetText", new object[]
{
File.ReadAllText(string.Format("./Listbox scripts/{0}", listBox1.SelectedItem.ToString()))
});
}
I'm new to coding in C# and I have a textbox that has the names of text files in a directory and when I click on the text file in the listbox it's supposed to load the text from it into my textbox (named 'ScriptBox')
Here's my code:
private void Form1_Load(object sender, EventArgs e)
{
string User = System.Environment.MachineName;
textBox1.Text = "{CONSOLE} Welcome to Linst, " + User + "!";
directory = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory + #"Scripts");
files = directory.GetFiles("*.txt");
foreach (FileInfo file in files)
{
listBox1.Items.Add(file.Name);
}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
var selectedFile = files[listBox1.SelectedIndex];
ScriptBox.Text = File.ReadAllText(selectedFile.FullName); //these parts are the parts that dont work
}
Thanks in advance!

Add the below into your Form1.cs. What this is going to do is when a user clicks a listbox item, its going to call (raise an event) the "listBox1_MouseClick" method and set the text of the textbox to the text of the listbox item. I just quickly created an app and implemented the below and it works.
private void listBox1_MouseClick(object sender, MouseEventArgs e)
{
textBox1.Text = listBox1.Text;
}
And add the below to the Form1.Designer.cs where the rest of your list box properties are. The below is subscribing to an event, the listBox1_MouseClick method in Form1.cs, so when a user clicks on a listbox item, the listBox1_MouseClick method is going to run.
this.listBox1.MouseClick += new MouseEventHandler(this.listBox1_MouseClick);
I hope the above makes sense.

Your code is nice, and perfect but it just need a little validation check in list index selection
Try thing in your listbox_selectedIndexChanged
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBox1.SelectedIndex!=-1)
{
FileInfo selectedFile = files[listBox1.SelectedIndex];
ScriptBox.Text = File.ReadAllText(selectedFile.FullName);
}
}

I actually don't see a problem with your code, could it be a typo somewhere?
I did this and it worked for me:
private void Form1_Load(object sender, EventArgs e)
{
foreach (var file in System.IO.Directory.GetFiles(#"c:\"))
{
listBox1.Items.Add(file);
}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBox1.SelectedItem != null)
{
textBox1.Text = System.IO.File.ReadAllText(listBox1.SelectedItem.ToString());
}
}

Filtering datagridview with multiple combobox

I am trying to make a simple product code search using a datagridview.
I am able to filter the database but not able to get all the functions I want
I currently have it set as
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
productsBindingSource.Filter = string.Format("Type = '{0}'",
comboBox1.SelectedItem.ToString());
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
productsBindingSource.Filter = string.Format("Type = '{0}' AND Fitting = '{1}'",
comboBox1.SelectedItem.ToString(),
comboBox2.SelectedItem.ToString());
}
This code works but after the selections are made and I change comboBox1 the data resets and doesn't keep the selection of comboBox2.
I understand in my current code that this would not happen but I cannot figure out how to get this to happen.
I would also like to add a text box in the future and have it narrow the filter even more.

You should approach this a bit more generically like so
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
FilterProducts();
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
FilterProducts();
}
// Create a function to handle filters
private void FilterProducts()
{
string filter = "";
if (comboBox1.SelectedItem != null)
{
filter += string.Format("Type = '{0}'", comboBox1.SelectedItem.ToString());
}
if (comboBox2.SelectedItem != null)
{
if (filter.length > 0) filter += "AND "
filter += string.Format("Fitting = '{0}'", comboBox2.SelectedItem.ToString());
}
// Add another like above for your future textbox
// if (!string.IsNullOrEmpty(textBox1.Text))
// {
// if (filter.length > 0) filter += "AND "
// filter += string.Format("OtherColumn = '{0}'", textBox1.Text);
// }
productsBindingSource.Filter = filter;
}
The code could be further refactored for even better DRY standards but this should at least get you started.

passing value to handler

I have code like this:
private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.ShowDialog();
}
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
{
string ext = Path.GetExtension(openFileDialog1.FileName);
if(string.Compare(ext, ".FDB") == 0)
{
string fileName = openFileDialog1.SafeFileName;
string fileDirectory = Path.GetDirectoryName(openFileDialog1.FileName);
string databaseTxt = #"C:\Users\arist\AppData\Roaming\TDWork\";
string[] database = { fileDirectory + fileName };
if (Directory.Exists(databaseTxt))
{
System.IO.File.WriteAllLines(databaseTxt + "databases.txt", database);
}
else
{
DirectoryInfo di = Directory.CreateDirectory(databaseTxt);
System.IO.File.WriteAllLines(databaseTxt + "databases.txt", database);
}
}
else
{
MessageBox.Show("Fajl koji ste izabrali nije Firebird baza (.FDB)");
e.Cancel = true;
}
}
Now, i want to create more buttons that open same file dialog. Problem is that i want to pass openFileDialog directory to different textboxes. So logic is this:
If i open with button1, pass value to textbox1,
If i open with button2, pass value to textbox2,
if i open with button3, pass value to textbox3.
So i wanted to create int check (1, 2, 3) so when i press button1, it pass check = 1 to OpenDialog1_FileOk, so i just do switch there and do actions.
Problem is i do not know how to pass it to handler, and if that is possible. Also if there is any other solution, please write it.

First, you could use your openfiledialog just like this, without handling a whole new function for it:
if(openFileDialog1.ShowDialog() == DialogResult.OK){
//...code
}
Second, for your goal you'll have to be sure that the names of your controls are exactly ending on the digit you want (e.g. "button1" and "textbox1"). Then you can do it like this:
void Button1Click(object sender, EventArgs e)
{
//MessageBox.Show(bt.Name[bt.Name.Length - 1].ToString());
if(openFileDialog1.ShowDialog() == DialogResult.OK)
{
if(!Path.GetExtension(openFileDialog1.FileName).EndsWith(".FDB")) //checking if the extension is .FDB (as you've shown in your example)
{
MessageBox.Show("Fajl koji ste izabrali nije Firebird baza (.FDB)");
return; //return if it's not and no further code gets executed
}
string fileDirectory = Path.GetDirectoryName(openFileDialog1.FileName); //getting the directory
string nameOfMyButton = (sender as Button).Name; //you get the name of your button
int lastDigitOfMyName = Convert.ToInt16(Name[Name.Length - 1]); //returns the number of your button
TextBox neededTextboxToShowDirectory = this.Controls.Find("textbox" + lastDigitOfMyName, true).FirstOrDefault() as TextBox; //this will search for a control with the name "textbox1"
neededTextboxToShowDirectory.Text = fileDirectory; //you display the text
//... doing the rest of your stuff here
}
}

You could use a private field where you save temporarily the text of your TextBox and deploy it in the click event like this:
private int whichButton = 0;
private void button1_Click(object sender, EventArgs e)
{
whichButton = 1;
openFileDialog1.ShowDialog();
}
private void button2_Click(object sender, EventArgs e)
{
whichButton = 2;
openFileDialog1.ShowDialog();
}
private void button3_Click(object sender, EventArgs e)
{
whichButton = 3;
openFileDialog1.ShowDialog();
}
use then the whichButton to choose
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
{
switch (whichButton)
{
....
}
}

How To Delete Multiple Items from ListView C# With Delete Button

So, I have a simple ListView that users can add information to and a delete button that is only capable of deleting one selected item at a time. I'm trying to make it so that when multiple items are selected and 'delete' is pressed it deletes those selected items instead of just one. Your help is appreciated!
Add recipient code:
private void addtoRecipients_Click(object sender, EventArgs e)
{
if (recipientEmailBox.Text != "")
{
string[] S = new string[4];
S[0] = recipientEmailBox.Text;
S[1] = recipientNameBox.Text;
S[2] = txtLocation.Text;
S[3] = txtSubject.Text;
ListViewItem I = new ListViewItem(S);
recipientBox.Items.Add(I);
UpdateNoOfEmails();
}
}
My Delete Button Code (only deletes one selection at the moment)
private void deleteEntryBTN_Click(object sender, EventArgs e)
{
try { recipientBox.Items.Remove(recipientBox.SelectedItems[0]); }
catch { }
UpdateNoOfEmails();
}
Clear All Recipients Code
private void clearBTN_Click(object sender, EventArgs e)
{
recipientBox.Items.Clear();
UpdateNoOfEmails();
}

In my case, the simplest way to do it was with a while loop. This is what my new delete button code looks like:
private void deleteEntryBTN_Click(object sender, EventArgs e)
{
try
{
while (recipientBox.SelectedItems.Count > 0)
{
recipientBox.Items.Remove(recipientBox.SelectedItems[0]);
}
}
catch { }
UpdateNoOfEmails();
}

C# - creating multiple files with specific names

I've started to learn about System.IO in C# and I want to achieve something like this:
I have two buttons and one TextBox.
The first button event is supposed to use FolderBrowserDialog and let me choose a specific a folder.Then, to save its path in a variable.
The text box is supposed to get as a value the number of folders that I want to create in the choosen path.
The second button is going to create the number of folders(with different name each) written in the textbox at the first button specified path.
My buttons and textbox events so far:
...
int value;
String path;
private void button1_Click(object sender, EventArgs e)
{
FolderBrowserDialog fbd = new FolderBrowserDialog();
if (fbd.ShowDialog(this) == DialogResult.OK)
{
MessageBox.Show(fbd.SelectedPath);
path = folderBrowserDialog1.SelectedPath;//store selected path to variable "path"
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
value = Convert.ToInt32(textBox1.Text);//store the value from the textbox in variable "value"
}
private void button2_Click(object sender, EventArgs e)
{
if (!Directory.Exists(path))//if selected path exists
{
for(int i=0;i<value;i++)//trying to go through as folders as I wrote in the TextBox
{
Directory.CreateDirectory(path + "something");//is something wrong here, I guess.
}
}
}
My questions so far:
what's wrong with my code ?
how can I create each time the for(){} executes a folder with different name ?
I would appreciate any help

int value;
string path = null;
private void button1_Click(object sender, EventArgs e)
{
FolderBrowserDialog fbd = new FolderBrowserDialog();
if (fbd.ShowDialog(this) == DialogResult.OK)
{
MessageBox.Show(fbd.SelectedPath);
path = fbd.SelectedPath; //fbd not folderBrowserDialog1
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
value = Convert.ToInt32(textBox1.Text);//store the value from the textbox in variable "value"
}
private void button2_Click(object sender, EventArgs e)
{
if (path != null && Directory.Exists(path))
for(int i=0;i<value;i++)
Directory.CreateDirectory(Path.Combine(path,string.Format("SomeFolder{0}",i)));
}