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How to add a ToolTipService.ToolTip with CellStyleSelector?

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GridView
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Scott
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Scott asked on 29 Jan 2014, 06:44 PM
I've got the following GridViewDataColumn:

1.<telerik:GridViewDataColumn
2.    Header="Oldest Balance"
3.    DataMemberBinding="{Binding OldestBalance, Converter={StaticResource Currency2Converter}}"
4.    CellStyleSelector="{StaticResource OldestBalanceColorStyleSelector}"
5.    HeaderCellStyle="{StaticResource rgvHeaderCellStyle}"
6.    HeaderTextAlignment="Center"
7.    TextAlignment="Right"
8.    Width="Auto" />


The OldestBalanceStyleSelector is as follows:

01.public class OldestBalanceColorStyleSelector : Telerik.Windows.Controls.StyleSelector
02.{
03.    public override Style SelectStyle(object item, DependencyObject container)
04.    {
05.        var cpData = item as CreditPolicyData;
06.        var cell = container as GridViewCell;
07.        var style = new Style(typeof(GridViewCell));
08. 
09.        style.Setters.Add(new Setter
10.        (
11.            GridViewCell.BorderBrushProperty,
12.            new SolidColorBrush(Colors.Transparent)
13.        ));
14.        style.Setters.Add(new Setter
15.        (
16.            GridViewCell.BorderThicknessProperty,
17.            new Thickness(0)
18.        ));
19.        style.Setters.Add(new Setter
20.        (
21.            GridViewCell.MarginProperty,
22.            new Thickness(0)
23.        ));
24.        style.Setters.Add(new Setter
25.        (
26.            GridViewCell.PaddingProperty,
27.            new Thickness(20, 10, 20, 10)
28.        ));
29. 
30.        if
31.        (
32.            cpData.IsNotNull() &&
33.            cpData.OldestBalanceColor.IsNotNullOrEmpty()
34.        )
35.        {
36.            switch (cpData.OldestBalanceColor.ToLower())
37.            {
38.                case "red":
39.                    style.Setters.Add(new Setter
40.                    (
41.                        GridViewCell.BackgroundProperty,
42.                        new SolidColorBrush(Color.FromArgb(255, 214, 50, 50))
43.                    ));
44.                    style.Setters.Add(new Setter
45.                    (
46.                        GridViewCell.ForegroundProperty,
47.                        new SolidColorBrush(Colors.White)
48.                    ));
49.                    break;
50. 
51.                case "yellow":
52.                    style.Setters.Add(new Setter
53.                    (
54.                        GridViewCell.BackgroundProperty,
55.                        new SolidColorBrush(Color.FromArgb(255, 255, 238, 98))
56.                    ));
57.                    style.Setters.Add(new Setter
58.                    (
59.                        GridViewCell.ForegroundProperty,
60.                        new SolidColorBrush(Colors.Black)
61.                    ));
62.                    break;
63.                         
64.                case "black":
65.                    style.Setters.Add(new Setter
66.                    (
67.                        GridViewCell.BackgroundProperty,
68.                        new SolidColorBrush(Color.FromArgb(255, 34, 40, 43))
69.                    ));
70.                    style.Setters.Add(new Setter
71.                    (
72.                        GridViewCell.ForegroundProperty,
73.                        new SolidColorBrush(Colors.White)
74.                    ));
75.                    break;
76. 
77.                default:
78.                    style.Setters.Add(new Setter
79.                    (
80.                        GridViewCell.BackgroundProperty,
81.                        new SolidColorBrush(Colors.Transparent)
82.                    ));
83.                    break;
84.            }
85.        }
86.        else
87.        {
88.            style.Setters.Add(new Setter
89.            (
90.                GridViewCell.BackgroundProperty,
91.                new SolidColorBrush(Colors.Transparent)
92.            ));
93.        }
94. 
95.        return style;
96.    }
97.}


I need to add a ToolTip that describes what the color means.  Typically, I'd do something like this in XAML:

01.<telerik:GridViewColumn.CellStyle>
02.  <Style
03.    BasedOn="{StaticResource rgvCellStyle}"
04.    TargetType="telerik:GridViewCell">
05. 
06.    <Setter Property="Template">
07.      <Setter.Value>
08.        <ControlTemplate TargetType="telerik:GridViewCell">
09. 
10.          <Border
11.            Background="{TemplateBinding Background}"
12.            BorderBrush="{TemplateBinding BorderBrush}"
13.            BorderThickness="{TemplateBinding BorderThickness}"
14.            ToolTipService.Placement="Bottom"
15.            ToolTipService.ToolTip="{Binding OldestBalanceColorText}">
16. 
17.            <ContentPresenter />
18. 
19.          </Border>
20. 
21.        </ControlTemplate>
22.      </Setter.Value>
23.    </Setter>
24. 
25.  </Style>
26.</telerik:GridViewColumn.CellStyle>


However, this isn't showing correctly.  Am I doing the ContentPresenter part wrong?  Can this be accomplished in the CellStyleSelector at the same time I'm setting the color of the background?  This would be ideal, as I wouldn't need a converter or anything, I'd just set the text statically within that switch statement.

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Scott
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answered on 29 Jan 2014, 07:20 PM
I've figured it out.  

I ended up using cell.SetValue(ToolTipService.ToolTipProperty, "text"); for the tooltip text and cell.SetValue(ToolTipService.PlacementProperty, PlacementMode.Bottom); for the placement of the text.

Here's how it modified my code:

001.public class OldestBalanceColorStyleSelector : Telerik.Windows.Controls.StyleSelector
002.{
003.    public override Style SelectStyle(object item, DependencyObject container)
004.    {
005.        var cpData = item as CreditPolicyData;
006.        var cell = container as GridViewCell;
007.        var style = new Style(typeof(GridViewCell));
008. 
009.        style.Setters.Add(new Setter
010.        (
011.            GridViewCell.BorderBrushProperty,
012.            new SolidColorBrush(Colors.Transparent)
013.        ));
014. 
015.        style.Setters.Add(new Setter
016.        (
017.            GridViewCell.BorderThicknessProperty,
018.            new Thickness(0)
019.        ));
020. 
021.        style.Setters.Add(new Setter
022.        (
023.            GridViewCell.MarginProperty,
024.            new Thickness(0)
025.        ));
026. 
027.        style.Setters.Add(new Setter
028.        (
029.            GridViewCell.PaddingProperty,
030.            new Thickness(20, 10, 20, 10)
031.        ));
032. 
033.        if
034.        (
035.            cpData.IsNotNull() &&
036.            cpData.OldestBalanceColor.IsNotNullOrEmpty()
037.        )
038.        {
039.            cell.SetValue
040.            (
041.                ToolTipService.PlacementProperty,
042.                PlacementMode.Bottom
043.            );
044. 
045.            switch (cpData.OldestBalanceColor.ToLower())
046.            {
047.                case "red":
048. 
049.                    cell.SetValue
050.                    (
051.                        ToolTipService.ToolTipProperty,
052.                        "Is over 11 months old."
053.                    );
054. 
055.                    style.Setters.Add(new Setter
056.                    (
057.                        GridViewCell.BackgroundProperty,
058.                        new SolidColorBrush(Color.FromArgb(255, 214, 50, 50))
059.                    ));
060. 
061.                    style.Setters.Add(new Setter
062.                    (
063.                        GridViewCell.ForegroundProperty,
064.                        new SolidColorBrush(Colors.White)
065.                    ));
066. 
067.                    break;
068. 
069.                case "yellow":
070. 
071.                    cell.SetValue
072.                    (
073.                        ToolTipService.ToolTipProperty,
074.                        "Is 8 to 10 months old."
075.                    );
076. 
077.                    style.Setters.Add(new Setter
078.                    (
079.                        GridViewCell.BackgroundProperty,
080.                        new SolidColorBrush(Color.FromArgb(255, 255, 238, 98))
081.                    ));
082. 
083.                    style.Setters.Add(new Setter
084.                    (
085.                        GridViewCell.ForegroundProperty,
086.                        new SolidColorBrush(Colors.Black)
087.                    ));
088. 
089.                    break;
090.                         
091.                case "black":
092. 
093.                    cell.SetValue
094.                    (
095.                        ToolTipService.ToolTipProperty,
096.                        "Is 1 to 7 months old."
097.                    );
098. 
099.                    style.Setters.Add(new Setter
100.                    (
101.                        GridViewCell.BackgroundProperty,
102.                        new SolidColorBrush(Color.FromArgb(255, 34, 40, 43))
103.                    ));
104. 
105.                    style.Setters.Add(new Setter
106.                    (
107.                        GridViewCell.ForegroundProperty,
108.                        new SolidColorBrush(Colors.White)
109.                    ));
110. 
111.                    break;
112. 
113.                default:
114. 
115.                    style.Setters.Add(new Setter
116.                    (
117.                        GridViewCell.BackgroundProperty,
118.                        new SolidColorBrush(Colors.Transparent)
119.                    ));
120. 
121.                    break;
122.            }
123.        }
124.        else
125.        {
126.            style.Setters.Add(new Setter
127.            (
128.                GridViewCell.BackgroundProperty,
129.                new SolidColorBrush(Colors.Transparent)
130.            ));
131.        }
132. 
133.        return style;
134.    }
135.}

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