Develop Reference

2 lines in the Debug.Log result C#

How can I show the Debug.Log in 2 lines (like adding an enter or <br>) in C#?
I have lots of info to show and compare, yet it is not convenient to read it in one line.
Current result: Debug.Log("Pointer:" + " " + pointerPosX + " " + pointerPosY + " " + "target" + " " + targetPosX + " " + targetPosY);
Expected result:
Pointer: pointerPosX + " " + pointerPosY
Target: targetPosX " " " + targetPosY
P.S. This is my first question in StackOverflow - so, please, let me know if I did something wrong.

Option 1 (\n):
Debug.Log("Pointer:" + " " + pointerPosX + " "
+ pointerPosY + "\n" + "Target:" + " " + targetPosX + " " + targetPosY);
Option 2 (System.Environment.NewLine):
Debug.Log("Pointer:" + " " + pointerPosX + " " + pointerPosY +
System.Environment.NewLine + "Target:" + " " + targetPosX + " " + targetPosY);
Using $ - string interpolation
Option 1:
Debug.Log($"Pointer: {pointerPosX} {pointerPosY}\nTarget: {targetPosX} {targetPosY}");
Option 2:
Debug.Log($"Pointer: {pointerPosX} {pointerPosY}{System.Environment.NewLine}Target: {targetPosX} {targetPosY}");
Difference between "\n" and Environment.NewLine

display the text on 2 different lines

listBox2.Items.Add(c[n].nume_proprietar + ", " + c[n].nume_catel + ", " + c[n].varsta + " ani , " + c[n].data_vaccin + " " + c[n].tip_vaccin);
Hi, I was wandering if i could insert a line in between " ani , " and c[n].data_vaccin so that my code will display on 2 different lines, obviously with the vallues i insert when i will run the program:
c[n].nume_proprietar ", " c[n].nume_catel ", " c[n].varsta + " ani , " and on another line
c[n].data_vaccin " " c[n].tip_vaccin

Insert Environment.NewLine where you want to breakline. It is environment specific and provides clarity over "\r\n" hence it's preferred to use.
listBox2.Items.Add(c[n].nume_proprietar + ", " + c[n].nume_catel + ", " + c[n].varsta + " ani ," + Environment.NewLine + c[n].data_vaccin + " " + c[n].tip_vaccin);

Set every element of TextBlockResult to visible when the value is not null

i would like to make each element of textblockresult visible only when the value is not null.
Intent, ROKEntity, ProcedureName etc are strings that are defined as empty and then receive their value from a json :
string intent = "";
if (!string.IsNullOrEmpty(root.XPathSelectElement("//intent").Value))
{
intent = root.XPathSelectElement("//intent").Value;
}
resultToDisplay = "Action: " + intent
+ Environment.NewLine + "Rok Entity: " + ROKEntity
+ Environment.NewLine + "Rok Entity: " + ROKEntity2
+ Environment.NewLine + "Rok Entity: " + ROKEntity3
+ Environment.NewLine + "Procedure Name: " + ProcedureName
+ Environment.NewLine + "Folder Name: " + FolderName
+ Environment.NewLine + "Task Name: " + TaskName
+ Environment.NewLine + "Worker Name: " + WorkerName
+ Environment.NewLine + "Risk Name: " + RiskName
+ Environment.NewLine + "File Name: " + FileName
+ Environment.NewLine + "Workflow Name: " + WorkflowName
+ Environment.NewLine + "Model Name: " + ModelName
+ Environment.NewLine + "Position Name: " + PositionName
+ Environment.NewLine + "Created by: " + CreatedBy
+ Environment.NewLine + "Modified by: " + ModifiedBy
+ Environment.NewLine + "From: " + From
+ Environment.NewLine + "To: " + To
+ Environment.NewLine + "Display Mode: " + DisplayMode
+ Environment.NewLine + "Data Tracking: " + DataTracking
+ Environment.NewLine + "Details: " + Details
+ Environment.NewLine + "Export Format: " + ExportFormat
+ Environment.NewLine + "Ged Files: " + GedFiles
+ Environment.NewLine + "Ged Folders: " + GedFolders
+ Environment.NewLine + "Map: " + Map
+ Environment.NewLine + "Kpi: " + Kpi
+ Environment.NewLine + "Procedure Type: " + ProcedureType
TextBlockResult.Text = resultToDisplay;
ie i want "Action: " + intent to be visible only when the value of intent is not null nor empty, the same for "Rok Entity: " + ROKEntity and so forth ..
For the moment, i have the following xaml that only allows me to set the visibility of the whole lot to collapsed or hidden or visible:
<TextBlock x:Name="TextBlockResult" Visibility="Collapsed" TextWrapping="Wrap" TextAlignment="Center" FontFamily="Segoe UI" FontSize="16" Foreground="Black"><Run Text="Result"/><InlineUIContainer>
What are the different steps to achieve that please ?

if I understand correctly what you are trying to do, you can just skip the elements with empty or null value. So have a method like
private void AddToDisplay(StringBuilder sb, string title, string value)
{
if (!string.IsNullOrEmpty(value))
{
if (sb.Length > 0)
sb.Append(Environment.NewLine);
sb.Append(title);
sb.Append(value);
}
}
then build your result like
var sb = new StringBuilder();
AddToDisplay(sb, "Action: ", intent);
AddToDisplay(sb, "Rok Entity: ", ROKEntity);
.
.
resultToDisplay = sb.ToString();
that way your results show only non-null non-empty elements and optionally hide the entire TextBlock if resultToDisplay is empty after you are done building it

WPF saving inputs & updating

I've already got the the point where I can save all inputs to a text file but now I would like to create another feature where I can update that file but only through the form itself
private void button_Click(object sender, RoutedEventArgs e)
{
string lb1 = "";
string lb = "";
//Removes listboxtitem object name
ListBoxItem mySelectedItem0 = listBox.SelectedItem as ListBoxItem;
ListBoxItem mySelectedItem1 = listBox1.SelectedItem as ListBoxItem;
if (mySelectedItem0 != null && mySelectedItem1 != null)
{
lb1 = mySelectedItem1.Content.ToString();
lb = mySelectedItem0.Content.ToString();
}
TextWriter saveText = new StreamWriter(#"D:\blah.txt");
saveText.Write("===================================[Receipt]===================================" + "\r\n");
saveText.Write("|Title:" + " " + comboBox.Text + "\r\n");
saveText.Write("|Surname:" + " " + textBox1.Text + "\r\n");
saveText.Write("|Forname:" + " " + textBox2.Text + "\r\n");
saveText.Write("|Passanger[s]:" + " " + textBox6.Text + "\r\n");
saveText.Write("|Group:" + " " + checkBox.IsChecked + " " + "No: " + textBox4.Text + "\r\n");
saveText.Write("|Class:" + " " + comboBox1.Text + "\r\n");
saveText.Write("|Luggage:" + " " + textBox7.Text + "\r\n");
saveText.Write("|Suitcase:" + " " + checkBox1.IsChecked + " " + "No: " +textBox5.Text + "\r\n");
saveText.Write("|Departure On:" + " " + DatePicker.Text + " " + "At:" + " " +comboBox2.Text + "\r\n");
saveText.Write("|Destination From:" + " " + lb + " " + "To:" + " " + lb1 + "\r\n");
saveText.Write("===================================[Receipt]===================================");
saveText.Close();
File.AppendAllText(#"D:\blah.txt", Environment.NewLine);
}
so here it safes all inputs and values as strings into a blah.txt file, how can I now retrieve all information from the file into the form and update it?

You can read the entire content of a text file by using ReadAllText function. Also, you can condense your text construction:
String ticketText = String.Format(#"
===================================[Receipt]====================================
|Title: {0}
|Surname: {1}
|Forname: {2}
...
...
", comboBox.Text, textBox1.Text, textBox2.Text, ...);
saveText.Write(ticketText);
This way of constructing your text is better since everything is done at once and it is easier to read. This will be made even easier when with interpolated strings.
Also I recommend naming your control by their meaning: e.g. txtTitle or TitleText for Title.

In your code you are using 2 different methods to write to a file in one process. You use a StreamWriter to save the receipt. And then static File.AppendAllText to attach an empty line. No need to do that. I think it would be better to generate the message in a separate method and then use the static File.AppendAllText to save everything in one go:
private string GetReceipt()
{
StringBuilder receiptBuilder = new StringBuilder();
receiptBuilder.AppendLine("===================================[Receipt]===================================");
receiptBuilder.AppendLine("|Title:" + " " + comboBox.Text);
receiptBuilder.AppendLine("|Surname:" + " " + textBox1.Text);
receiptBuilder.AppendLine("|Forname:" + " " + textBox2.Text);
receiptBuilder.AppendLine("|Passanger[s]:" + " " + textBox6.Text);
receiptBuilder.AppendLine("|Group:" + " " + checkBox.IsChecked + " " + "No: " + textBox4.Text);
receiptBuilder.AppendLine("|Class:" + " " + comboBox1.Text);
receiptBuilder.AppendLine("|Luggage:" + " " + textBox7.Text);
receiptBuilder.AppendLine("|Suitcase:" + " " + checkBox1.IsChecked + " " + "No: " + textBox5.Text);
receiptBuilder.AppendLine("|Departure On:" + " " + DatePicker.Text + " " + "At:" + " " + comboBox2.Text);
receiptBuilder.AppendLine("|Destination From:" + " " + lb + " " + "To:" + " " + lb1);
receiptBuilder.AppendLine("===================================[Receipt]===================================");
receiptBuilder.AppendLine();
return receiptBuilder.ToString();
}
And then save to the file:
File.AppendAllText(filePath, GetReceipt());
With this small refactoring you can now easily achieve first part of your request: Updating the existing file.
When you need to update the file with new data you simply invoke the GetReceipt() and append the results.
Or if you need the old file to be erased then you can use WriteAllText instead:
File.WriteAllText(filePath, GetReceipt());
Now the reading of the file. Depends what you need. If you just read the text and display it in a text box then it's fairly easy. Just use ReadAllText
myTextBox.Text = File.ReadAllText(filePath);
However if you want to display it in appropriate combo boxes and text boxes then you would have to manually read the file. But if that's the case then I'd encourage you to refactor your code a little bit:
Create a class that holds all the information of the receipt. Each time you want to save your data create a new instance of this class and then serialize it (or save to a database) so it's easy to retrieve specific fields. If you still want to have a nice way to display a receipt you can override the ToString method.

Store a string based up dropdownlist selection

Basically I am making a webform where you will fill all of the textboxes out and then select a category from a dropdown and hit submit. Based upon which category you select should dictate what string the data from the textboxes is stored in. I'm on a novice level when it comes to C# and ASP.NET and something is off about my if statements but I can't figure out how to do them properly.
Code below:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
string non_fiction;
string fiction;
string self_help;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Submit_btn_Click(object sender, EventArgs e)
{
if (Cat_DropDownList.SelectedIndex = 0)
{
fiction = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}
if (Cat_DropDownList.SelectedIndex = 1)
{
non_fiction = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}
if (Cat_DropDownList.SelectedIndex = 2)
{
self_help = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}
}
}
Also to save another post I need to figure out a way to have these stored so I can call the "full" strings and add them to another one on another page.

I would declare
StringBuilder non_fiction = new StringBuilder();
StringBuilder fiction = new StringBuilder();
StringBuilder self_help = new StringBuilder();
StringBuilder[] strings = null;
and use them as
protected void Page_Load(object sender, EventArgs e)
{
strings = new StringBuilder[] { fiction, non_fiction, self_help };
}
protected void Submit_btn_Click(object sender, EventArgs e)
{
strings[Cat_DropDownList.SelectedIndex].Append("Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text);
}
without ifs and switches

first you are missing == operator in if condition . you need to use == operator for comaparision
if (Cat_DropDownList.SelectedIndex == 0)
{
fiction = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}
if (Cat_DropDownList.SelectedIndex == 1)
{
non_fiction = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}
if (Cat_DropDownList.SelectedIndex == 2)
{
self_help = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}

if (Cat_DropDownList.SelectedIndex = 0)
{
fiction = "Title: " + Titletxt.Text + " | " + "Description: " + Descriptiontxt.Text + " | " + "Price: " + Pricetxt.Text + " | " + "Quantity: " + Quantitytxt.Text;
}
= is assignment - you want a comparison with == instead - same applies to the other if statements. Also using string.Format() would make this statement much more readable (imo):
if (Cat_DropDownList.SelectedIndex == 0)
{
fiction = string.Format("Title: {0} | Description: {1} | Price: {2} | Quantity: {3}", Titletxt.Text, Descriptiontxt.Text, Pricetxt.Text, Quantitytxt.Text);
}