The data bar rule uses a bar that is displayed as the background for each cell. The length of the bar corresponds to the size of the data relative to the other data in the worksheet. The longer the bar, the greater the value in the cell.

The following image displays data bars in a cell range:

You can specify the value type and the value to compare in the conditional format.

Valid percentiles are from 0 (zero) to 100. A percentile cannot be used if the range of cells contains more than 8,191 data points.
Use a percentile when you want to visualize a group of high values (such as the top 20th percentile) in one data bar and low values (such as the bottom 20th percentile) in another data bar. This is useful if you have extreme values that might skew the visualization of your data.

Valid percent values are from 0 (zero) to 100. Percent values should not use a percent sign. Use a percentage when you want to visualize all values proportionally because the distribution of values is proportional.

Start formulas with an equal sign (=). Invalid formulas result in no formatting applied.

The minimum and maximum types can be different. The Maximum property should not be set to a ConditionalFormattingValue value such as ConditionalFormattingValueType.Min or ConditionalFormattingValueType.AutoMin. An exception will occur in this case. The Minimum property should not be set to a ConditionalFormattingValue value such as ConditionalFormattingValueType.Max or ConditionalFormattingValueType.AutoMax. An exception will occur in this case.

You can also specify borders, colors, and an axis.

Using Code

Set the properties of the data bar rule class and then apply the formatting.

Example

This example code creates a data bar rule and uses the SetConditionalFormatting method to apply the rule.

private void Form1_Load(object sender, EventArgs e)
        {
            fpSpread1.Sheets[0].Cells[0, 0].Value = 3;
            fpSpread1.Sheets[0].Cells[1, 0].Value = 2;
            fpSpread1.Sheets[0].Cells[2, 0].Value = 10;
            fpSpread1.Sheets[0].Cells[3, 0].Value = 1;           
        }

        private void button1_Click(object sender, EventArgs e)
        {
         FarPoint.Win.Spread.DatabarConditionalFormattingRule d = new FarPoint.Win.Spread.DatabarConditionalFormattingRule();
        d.BorderColor = Color.Red;
        d.ShowBorder = true;
        d.Minimum = new FarPoint.Win.Spread.ConditionalFormattingValue(0, FarPoint.Win.Spread.ConditionalFormattingValueType.Number);
        d.Maximum = new FarPoint.Win.Spread.ConditionalFormattingValue(15, FarPoint.Win.Spread.ConditionalFormattingValueType.Max);
        fpSpread1.ActiveSheet.SetConditionalFormatting(0, 0, 4, 1, d);
        }

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        fpSpread1.Sheets(0).Cells(0, 0).Value = 3
        fpSpread1.Sheets(0).Cells(1, 0).Value = 2
        fpSpread1.Sheets(0).Cells(2, 0).Value = 10
        fpSpread1.Sheets(0).Cells(3, 0).Value = 1
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim d As New FarPoint.Win.Spread.DatabarConditionalFormattingRule()
        d.BorderColor = Color.Red
        d.ShowBorder = True
        d.Minimum = New FarPoint.Win.Spread.ConditionalFormattingValue(0, FarPoint.Win.Spread.ConditionalFormattingValueType.Number)
        d.Maximum = New FarPoint.Win.Spread.ConditionalFormattingValue(15, FarPoint.Win.Spread.ConditionalFormattingValueType.Max)
        fpSpread1.ActiveSheet.SetConditionalFormatting(0, 0, 4, 1, d)
    End Sub

Using the Spread Designer

1. In the work area, select the cell or cells for which you want to set the conditional format.
2. Under the Home menu, select the Conditional Formatting icon in the Style section, then select the Data Bars option, and then choose the color set.
3. From the File menu choose Apply and Exit to apply your changes to the component and exit Spread Designer.