public void AddExcelImage(ExcelImage excelImage)
{
if (excelImage?.ImageBytes != null)
{
_excelImages.Add(excelImage);
}
}
/// <summary>
/// 从datatable填充工作簿
/// </summary>
/// <param name="sheet">工作簿</param>
/// <param name="table">数据</param>
/// <param name="settings">列设置</param>
/// <param name="startRow">起始行，默认第一行</param>
/// <param name="startColumn">起始列，默认第一列A列</param>
public static void FillWorksheet(this ExcelWorksheet sheet, DataTable table, ColumnSettings settings = null, int startRow = 1, int startColumn = 1)
{
// 填充表头
var maxWidth = new int[table.Columns.Count];
for (var j = 0; j < table.Columns.Count; j++)
{
sheet.SetValue(startRow, j + startColumn, table.Columns[j].ColumnName);
maxWidth[j] = Encoding.UTF8.GetBytes(table.Columns[j].ColumnName).Length;
}
sheet.Row(startRow).Style.Font.Bold = true; // 表头设置为粗体
sheet.Row(startRow).Style.Font.Size = sheet.Row(startRow).Style.Font.Size * 1.11f; // 表头字号放大1.11倍
sheet.Row(startRow).CustomHeight = true; // 自动调整行高
sheet.Cells.AutoFitColumns(); // 表头自适应列宽
sheet.Cells.Style.WrapText = true;
if (settings != null)
{
foreach (var x in settings.ColumnTypes)
{
sheet.Column(x.Key).Style.Numberformat.Format = x.Value;
}
}
// 填充内容
for (var i = 0; i < table.Rows.Count; i++)
{
sheet.Row(i + startRow + 1).CustomHeight = true; // 自动调整行高
for (var j = 0; j < table.Columns.Count; j++)
{
switch (table.Rows[i][j])
{
case Stream s:
{
if (s.Length > 2)
{
var(pictureType, ms) = Detect(s);
var bmp = new ExcelImage(ms, pictureType).Bounds;
var picture = sheet.Drawings.AddPicture(Guid.NewGuid().ToString(), ms, pictureType);
picture.SetPosition(i + startRow, 3, j + startColumn - 1, 5); //设置图片显示位置
var percent = Math.Min(11000f / bmp.Height, 100);
picture.SetSize((int)percent);
sheet.Row(i + startRow + 1).Height = 90;
sheet.Column(j + startColumn).Width = Math.Max(sheet.Column(j + startColumn).Width, bmp.Width * percent / 600 > 32 ? bmp.Width * percent / 600 : 32);
}
sheet.SetValue(i + startRow + 1, j + startColumn, "");
break;
}
case IEnumerable <Stream> streams:
{
double sumWidth = 0;
foreach (var stream in streams.Where(stream => stream.Length > 2))
{
var(pictureType, ms) = Detect(stream);
var bmp = new ExcelImage(ms, pictureType).Bounds;
var picture = sheet.Drawings.AddPicture(Guid.NewGuid().ToString(), ms, pictureType);
picture.SetPosition(i + startRow, 3, j + startColumn - 1, (int)(5 + sumWidth)); //设置图片显示位置
var percent = Math.Min(11000f / bmp.Height, 100);
picture.SetSize((int)percent);
sheet.Row(i + startRow + 1).Height = 90;
sumWidth += bmp.Width * 1.0 * percent / 100 + 5;
sheet.Column(j + startColumn).Width = Math.Max(sheet.Column(j + startColumn).Width, sumWidth / 6 > 32 ? sumWidth / 6 : 32);
}
sheet.SetValue(i + startRow + 1, j + startColumn, "");
break;
}
case IDictionary <string, Stream> dic:
{
double sumWidth = 0;
foreach (var kv in dic.Where(kv => kv.Value.Length > 2))
{
var(pictureType, ms) = Detect(kv.Value);
var bmp = new ExcelImage(ms, pictureType).Bounds;
var picture = sheet.Drawings.AddPicture(Guid.NewGuid().ToString(), ms, pictureType, new Uri(kv.Key));
picture.SetPosition(i + startRow, 3, j + startColumn - 1, (int)(5 + sumWidth)); //设置图片显示位置
var percent = Math.Min(11000f / bmp.Height, 100);
picture.SetSize((int)percent);
sheet.Row(i + startRow + 1).Height = 90;
sumWidth += bmp.Width * 1.0 * percent / 100 + 5;
sheet.Column(j + startColumn).Width = Math.Max(sheet.Column(j + startColumn).Width, sumWidth / 6 > 32 ? sumWidth / 6 : 32);
}
sheet.SetValue(i + startRow + 1, j + startColumn, "");
break;
}
case IDictionary <string, MemoryStream> dic:
{
double sumWidth = 0;
foreach (var kv in dic.Where(kv => kv.Value.Length > 2))
{
var(pictureType, ms) = Detect(kv.Value);
var bmp = new ExcelImage(ms, pictureType).Bounds;
var picture = sheet.Drawings.AddPicture(Guid.NewGuid().ToString(), ms, pictureType, new Uri(kv.Key));
picture.SetPosition(i + startRow, 3, j + startColumn - 1, (int)(5 + sumWidth)); //设置图片显示位置
var percent = Math.Min(11000f / bmp.Height, 100);
picture.SetSize((int)percent);
sheet.Row(i + startRow + 1).Height = 90;
sumWidth += bmp.Width * 1.0 * percent / 100 + 5;
sheet.Column(j + startColumn).Width = Math.Max(sheet.Column(j + startColumn).Width, sumWidth / 6 > 32 ? sumWidth / 6 : 32);
}
sheet.SetValue(i + startRow + 1, j + startColumn, "");
break;
}
default:
{
sheet.SetValue(i + startRow + 1, j + startColumn, table.Rows[i][j] ?? "");
if (table.Rows[i][j] is ValueType)
{
sheet.Column(j + startColumn).AutoFit();
}
else
{
// 根据单元格内容长度来自适应调整列宽
sheet.Column(j + startColumn).Width = Math.Max(Encoding.UTF8.GetBytes(table.Rows[i][j].ToString() ?? string.Empty).Length + 2, sheet.Column(j + startColumn).Width);
if (sheet.Column(j + startColumn).Width > 110)
{
sheet.Column(j + startColumn).AutoFit(100, 110);
}
}
break;
}
}
}
}
}
public void AddImage(string worksheetName, ExcelImage excelImage)
{
CreateWorksheetPartBuilderIfNotExist(worksheetName);
_worksheetPartBuilders[worksheetName].AddExcelImage(excelImage);
}