Sorting ListViewItems by Date, Number or String

As shown in this article, you can sort a ListView items by date.

This code is very slow however.

Here’s an improved version which also handles sorting of numbers.

First create a static Dictionary in your MainForm, like this:

internal static Dictionary<int, ListViewColumnSorter.cDataType> columnType = new Dictionary<int,ListViewColumnSorter.cDataType>();

cDataType

is an enum:
public enum cDataType

{

    number, datetime, text

}

When re-loading your ListView, or when changing the columns, clear the Dictionary, because the data type of the column can change.

public int Compare(object x, object y)

{

    int compareResult;

    ListViewItem listviewX, listviewY;

    // Cast the objects to be compared to ListViewItem objects

    listviewX = (ListViewItem)x;

    listviewY = (ListViewItem)y;

    // Compare the two items

    //Determine data type of object

    string objectX = listviewX.SubItems[ColumnToSort].Text;

    string objectY = listviewY.SubItems[ColumnToSort].Text;

    cDataType dType = cDataType.text;

    if (!MainForm.columnType.TryGetValue(ColumnToSort, out dType))

    {

        long tempLong;

        DateTime tempDateTime;

        if (Int64.TryParse(objectX, out tempLong))

        {

            MainForm.columnType.Add(ColumnToSort, cDataType.number);

        }

        else if (DateTime.TryParse(objectX, out tempDateTime))

        {

            MainForm.columnType.Add(ColumnToSort, cDataType.datetime);

        }

        else

        {

            MainForm.columnType.Add(ColumnToSort, cDataType.text);

        }

    }

    switch (MainForm.columnType[ColumnToSort])

    {

        case cDataType.number:

            compareResult = ObjectCompare.Compare(Convert.ToInt64(objectX), Convert.ToInt64(objectY));

            break;

        case cDataType.datetime:

            compareResult = ObjectCompare.Compare(DateTime.Parse(objectX), DateTime.Parse(objectY));

            break;

        default:

            compareResult = ObjectCompare.Compare(objectX, objectY);

            break;

    }

   

    // Calculate correct return value based on object comparison

    if (OrderOfSort == SortOrder.Ascending)

    {

        // Ascending sort is selected, return normal result of compare operation

        return compareResult;

    }

    else if (OrderOfSort == SortOrder.Descending)

    {

        // Descending sort is selected, return negative result of compare operation

        return (-compareResult);

    }

    else

    {

        // Return '0' to indicate they are equal

        return 0;

    }

}

App-V Icons

While programming the App-V Self Support tool I noticed that application Icons are stored in a lot of different places.

Here’s some places where you can look for:

1: User’s Icon Cache. By default located in %Appdata%\Softgrid Client\Icon Cache

 Note that you have to now the GUID of the app you're trying to fetch.

Use WMI for that, or the OSD file.

2: Public Icon Cache. By Default located in Public Documents

 

3: A direct approach: In the folder where the SFT and OSD of the package reside:

You can use code like this:

string orgOsdPath = "";

RegistryKey appsKey = appVKey.OpenSubKey("Applications");

orgOsdPath = appsKey.OpenSubKey(<<Full Name of App-V application>>).GetValue("OriginalDescriptionURL").ToString();

DirectoryInfo di = new DirectoryInfo(Path.GetDirectoryName(orgOsdPath));

string icopath = di.FullName + "\\" + di.Name + " Icons\\" + Path.GetFileNameWithoutExtension(orgOsdPath) + ".ico";if(File.Exists(icopath))

{

    Do something with: icopath;

}