I tryed to add different colors rows and columns on listview.

I want to like this

it is the first listview

Firstly i used these codes

foreach (ListViewItem item in listView.Items)
{
   item.BackColor = item.Index % 2 == 0 ? Color.FromArgb(70, 70, 70) : Color.FromArgb(61, 61, 61);
}

Then the listview shown like this

And then i tryed these codes:

foreach (ListViewItem item in listView.Items)
{
   item.SubItems[2].BackColor = Color.FromArgb(18, 64, 100);
   item.SubItems[9].BackColor = Color.FromArgb(105, 16, 38);
   item.UseItemStyleForSubItems = false;
}

Ande last listview shown like this

Whats wrong?

thank you.

CodePudding user response：

When you apply alternating row colors, you only apply that to column 1 (aka. item). When you apply the column[2 and 9] formatting, you turn off UseItemStyleForSubItems, so only the first column now carries the alternating row colors. You have to combine the alternating row and column formating code into one code block like so:

foreach (ListViewItem item in listView.Items)
{
    //Disable item styles for sub items so we can apply column colors.
    item.UseItemStyleForSubItems = false;

    //Create the main colors used for row formatting.
    Color a = Color.FromArgb(61, 61, 61);
    Color b = Color.FromArgb(70, 70, 70);

    //Create the alternate colors used for column 2 and 9.
    Color alt2 = Color.FromArgb(18, 64, 100);
    Color alt9 = Color.FromArgb(105, 16, 38);

    //Apply colors to column 1
    if (item.Index % 2 == 0) {
        item.BackColor = b;
    } else {
        item.BackColor = a;
    }
    
    //Loop through the sub items and apply colors.
    foreach(ListViewSubItem sub in item.SubItems) {
        if (sub.Index == 2) {             //Apply column 2 color.
            sub.BackColor = alt2;
        } else if (sub.Index == 9) {      //Apply column 9 color.
            sub.BackColor = alt9;         
        } else if (item.Index % 2 == 0) { //Apply alt row color.
            sub.BackColor = b;            
        } else {                          //Apply main row color. This is the default.
            sub.BackColor = a;            
        }
    }
}

CodePudding user response：

I did with this codes.

                foreach (ListViewItem item in listView.Items)
            {
                //Disable item styles for sub items so we can apply column colors.
                item.UseItemStyleForSubItems = false;

                //Create the main colors used for row formatting.
                Color a = Color.FromArgb(61, 61, 61);
                Color b = Color.FromArgb(70, 70, 70);

                //Create the alternate colors used for column 2 and 9.
                Color alt2 = Color.FromArgb(18, 64, 100);
                Color alt9 = Color.FromArgb(105, 16, 38);

                //Apply colors to column 1
                if (item.Index % 2 == 0)
                {
                    item.BackColor = b;
                }
                else
                {
                    item.BackColor = a;
                }

                int i = 0;
                foreach (ListViewSubItem sub in item.SubItems)
                {
                    sub.Name = i.ToString();
                    i  ;
                }

                foreach (ListViewSubItem sub in item.SubItems)
                {
                    if (sub.Name == "3")
                    {             //Apply column 2 color.
                        sub.BackColor = alt2;
                    }
                    else if (sub.Name == "11")
                    {      //Apply column 9 color.
                        sub.BackColor = alt9;
                    }
                    else if (item.Index % 2 == 0)
                    { //Apply alt row color.
                        sub.BackColor = b;
                    }
                    else
                    {                          //Apply main row color. This is the default.
                        sub.BackColor = a;
                    }
                }

                listView.Sort();
            }