在Excel中，可以将边框添加到单个单元格以强调数据，标记汇总值或单元格区域中的数据。边界也可以用不同的线条样式和颜色进行格式化。本文介绍了如何使用将边框样式应用于Excel单元格。

Step 1: 创建一个工作簿实例并获取第一个工作表。

Workbook wb = new Workbook();Worksheet sheet = wb.Worksheets[0];

Step 2: 获取您想要应用边框样式的单元格区域。

CellRange range = sheet.Range["B2:D4"];

Step 3: 调用BorderInside（）和BorderAround（）方法将样式应用于范围内和范围的边界。 若要将边框添加到顶部，底部，左侧和右侧，请使用边框[BordersLineType.EdgeTop] .LineStyle属性，边框[BordersLineType.EdgeBottom] .LineStyle属性等。

range.BorderInside(LineStyleType.Thin, Color.Blue);range.BorderAround(LineStyleType.Medium, Color.Blue);

Step 4: 保存到文件。

wb.SaveToFile("result.xlsx", ExcelVersion.Version2013);

输出：

完整代码：

[C#]

Workbook wb = new Workbook();Worksheet sheet = wb.Worksheets[0];//apply border style to the range B2:D4CellRange range = sheet.Range["B2:D4"];range.BorderInside(LineStyleType.Thin, Color.Blue);range.BorderAround(LineStyleType.Medium, Color.Blue);//apply border style to the range D7:F9range = sheet.Range["D7:F9"];range.Borders.LineStyle = LineStyleType.Double;range.Borders[BordersLineType.DiagonalDown].LineStyle = LineStyleType.None;range.Borders[BordersLineType.DiagonalUp].LineStyle = LineStyleType.None;//apply border style to the range F12:H14range = sheet.Range["F12:H14"];range.Merge();range.BorderAround(LineStyleType.Thin);range.Borders[BordersLineType.DiagonalDown].LineStyle = LineStyleType.Thin;range.Borders[BordersLineType.EdgeBottom].LineStyle = LineStyleType.Thick;  range.Borders.Color = Color.Red;wb.SaveToFile("result.xlsx", ExcelVersion.Version2013);

[VB.NET]

Dim wb As Workbook = New Workbook()Dim sheet As Worksheet = wb.Worksheets(0) 'apply border style to the range B2:D4Dim range As CellRange = sheet.Range("B2:D4")range.BorderInside(LineStyleType.Thin, Color.Blue)range.BorderAround(LineStyleType.Medium, Color.Blue) 'apply border style to the range D7:F9range = sheet.Range("D7:F9")range.Borders.LineStyle = LineStyleType.Doublerange.Borders(BordersLineType.DiagonalDown).LineStyle = LineStyleType.Nonerange.Borders(BordersLineType.DiagonalUp).LineStyle = LineStyleType.None 'apply border style to the range F12:H14range = sheet.Range("F12:H14")range.Merge()range.BorderAround(LineStyleType.Thin)range.Borders(BordersLineType.DiagonalDown).LineStyle = LineStyleType.Thinrange.Borders(BordersLineType.EdgeBottom).LineStyle = LineStyleType.Thickrange.Borders.Color = Color.Redwb.SaveToFile("result.xlsx", ExcelVersion.Version2013)