visual studio C# listview save and load problem - c#

i have a problem with visual studio c# listview items that i cant found a solution over googling.
I've made from application with a listview, i can add, remove, update listview items.
I'm saving and loading the listview to/from file correctly with this code:
private void saveListViewItems(string path, ListView lv)
{
var delimeteredListviewData = new List<string>();
string delimeteredItems = string.Empty;
foreach (ListViewItem lvi in lv.Items)
{
foreach (ListViewItem.ListViewSubItem lvsi in lvi.SubItems)
{
delimeteredItems += lvsi.Text + "#";
}
delimeteredListviewData.Add(delimeteredItems);
}
System.IO.File.WriteAllLines(path, delimeteredListviewData.ToArray());
}
private void loadListViewItems(string path, ListView lv)
{
foreach (string line in System.IO.File.ReadAllLines(path))
{
lv.Items.Add(new ListViewItem(line.Split(new char[] { '#' }, StringSplitOptions.RemoveEmptyEntries)));
}
}
the problems is i have activated checkbox next to each item. i cant save listview items with checkbox checked. i want to save listview and load with selected items. thanks


Something like this?:
List<string> delimeteredItems = new List<string>();
foreach (ListViewItem lvi in listView1.CheckedItems)
{
string item= String.Join("#", lvi.SubItems.Cast<ListViewItem.ListViewSubItem>().Select(si=>si.Text));
delimeteredItems.Add(item);
}
System.IO.File.WriteAllLines(#"c:\temp\lines.txt", delimeteredItems);


Instead of only saving the string you need to save more information.
You can added add a IsChecked value together with your string.
You need a small wrapper class that holds both values as a property.
Then you can use serilization, it is a term to describe a way to convert an object to something you can store on disk.
There are many formats to pick from, but Json is a good readable format. You can download the Nuget package NewtonSoft.Json via the nuget package manager.
public class StoreListView
{
public void StoreToDisk(string path, List<ItemDataHolder> list)
{
string theListInJsonFormat = JsonConvert.SerializeObject(list);
File.WriteAllText(path, theListInJsonFormat);
}
}
public class ItemDataHolder
{
public string SomeValuesYouWantToSave { get; set; }
public bool IsChecked { get; set; }
}


I've Managed the program to work.
I was wrong about the way reading/writing the text file.
now I'm using ini-parser nuget.
installed ini parser to project.
then:
using IniParser;
using IniParser.Model;
private void saveListViewItems(string path, ListView lv)
{
int i = 0;
string IPFrom;
string IPFromval;
string IPTO;
string IPTOval;
string Comment;
string Commentval;
string CheckState;
string CheckStateval;
int IPSectioncount;
var parser = new FileIniDataParser();
IniData data = parser.ReadFile(path);
while ( i < lv.Items.Count) {
if ((lv.Items[i].Selected) || (lv.Items[i].Checked))
{
CheckStateval = "1";
}
else
{
CheckStateval = "0";
}
CheckState = "";
CheckState = "CheckState";
CheckState += String.Join(CheckState, i);
IPFromval = lv.Items[i].SubItems[0].Text;
IPFromval = "";
IPFrom = "IPFrom";
IPFrom += String.Join(IPFrom, i);
IPFromval = lv.Items[i].SubItems[0].Text;
IPTOval = "";
IPTO = "IPTO";
IPTO += String.Join(IPTO, i);
IPTOval = lv.Items[i].SubItems[1].Text;
Commentval = "";
Comment = "Comment";
Comment += String.Join(Comment, i);
Commentval = lv.Items[i].SubItems[2].Text;
data["IP"][CheckState] = CheckStateval;
data["IP"][IPFrom] = IPFromval;
data["IP"][IPTO] = IPTOval;
data["IP"][Comment] = Commentval;
i++;
}
IPSectioncount = lv.Items.Count;
data["IP"]["IPSectionCount"] = IPSectioncount.ToString();
parser.WriteFile(path, data);
}
private void loadListViewItems(string path, ListView lv)
{
string IPFrom;
string IPTO;
string Comment;
string CheckState;
string IPSectioncount;
string row="";
var parser = new FileIniDataParser();
IniData data = parser.ReadFile(path);
IPSectioncount = data["IP"]["IPSectionCount"];
int m = Int32.Parse(IPSectioncount);
int i = 0;
while ( i < m )
{
IPFrom = "";
IPTO = "";
Comment = "";
row = "";
IPFrom = "IPFrom";
IPFrom += String.Join(IPFrom, i);
IPFrom = data["IP"][IPFrom];
IPTO = "IPTO";
IPTO += String.Join(IPTO, i);
IPTO = data["IP"][IPTO];
Comment = "Comment";
Comment += String.Join(Comment, i);
Comment = data["IP"][Comment];
CheckState = "CheckState";
CheckState += String.Join(CheckState, i);
CheckState = data["IP"][CheckState];
row = String.Join(",",IPFrom,IPTO,Comment);
lv.Items.Add(new ListViewItem(row.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries)));
if (CheckState == "1")
{
lv.Items[i].Checked = true;
}
i++;
}
}

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You can use the Tag property to attach the movie object to each button in the loop:
movie1Button.Tag = movie;
afterwards in the click event grab the button from the sender and cast the Tag-object back to a Movie
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How to replace column data with blank inside C# script

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Can I make a dynamic combo Box from a text file?

I want to make a combo box like this:
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I made the following class to read and write the text file, but I couldn't find any resources in the internet to turn these text files to combo Box.
public static string ReadFromTextFile(string path)
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I don't have visual studio available now. So, I'll give you the way forward.
Read the line and split it into string array.
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Add it to the combobox items like cbo.Items.Add(arr[i]).
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You can use the string "Food"/"Water" as the Name property of the ComboBox to identify the each ComboBox.
Besides, note that should set a different Location for each ComboBox.
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If you want to access a specific ComboBox, you can call Control.ControlCollection.Find(String, Boolean) Method to get it.
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Without going into details (don't know why you need DataTable etc.) I will answer your main question from title.
This is how my textfile looks, no need for comma if you read line by line:
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}
public void CreateComboBox(string definition)
{
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var label = new Label();
label.Text = definition;
this.flowLayoutPanel1.Controls.Add(label);
this.flowLayoutPanel1.Controls.Add(combo);
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private void Form1_Load(object sender, EventArgs e)
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Use File.ReadAllLines(...) to short the txt read.
Point to control the position.
Attaches a delegate to SelectedIndexChanged that I imagine you will need for the next step.
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I want to load a text file into a data grid and apply a regular expression

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dataGrid.ItemsSource = codes;
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I want to load a text file into a data grid and apply a regular expression
but this code don't work for me

you don't need Regex to search for empty strings. String.IsNullOrWhiteSpace() method will do.
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datagrid
I want to exclude the part of the circle separately
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}
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Program stops working after selected index change second time listview c#

i have a problem that i change selected index in listview it works fine when i change first time but when i change second time it says "InvalidArgument=Value of '0' is not valid for 'index'."
the code is this ;
listBox1.Items.Clear();
string a = "";
a = "";
a = listView1.SelectedItems[0].SubItems[0].Text;
StreamReader oku = new StreamReader(strPath+"\\"+"Versiyonlar"+"\\"+a);
string OkunanVeri = oku.ReadToEnd();
string[] dizi = OkunanVeri.Split(new string[]{"\r\n"},StringSplitOptions.RemoveEmptyEntries);
foreach (var item in dizi)
{
listBox1.Items.Add(item);
}
oku.Close();
strpath is way to desktop

try
{
listBox1.Items.Clear();
string a = "";
a = "";
a = listView1.SelectedItems[0].SubItems[0].Text;
StreamReader oku = new StreamReader(strPath+"\\"+"Versiyonlar"+"\\"+a);
string OkunanVeri = oku.ReadToEnd();
string[] dizi = OkunanVeri.Split(new string[]{"\r\n"},StringSplitOptions.RemoveEmptyEntries);
foreach (var item in dizi)
{
listBox1.Items.Add(item);
}
oku.Close();
}
catch
{
}
i just fixed it like this

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