关于将数据写入Excel的问题

[redfield123]

private void WriteExcel(string filepath, ArrayList pointlist)//将数据导出到Excel中
{
try
{
Excel.Application excApp = new Microsoft.Office.Interop.Excel.Application();
excApp.Visible = false;
object oMissing = Missing.Value;
Excel.Worksheet worksheet = (Excel.Worksheet)excApp.Workbooks.Open(filepath,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing,oMissing).Worksheets[1];
Excel.Range rng;

for (int i = 0; i < pointlist.Count; i++)
{
PointClass point=new PointClass();
point = (PointClass)pointlist[i];
for (int j = 1; j <= worksheet.UsedRange.Columns.Count; j++)
{
if (((Excel.Range)worksheet.Cells[1, j]).Text.ToString() == "NAME")
{
rng = worksheet.get_Range(worksheet.Cells[i+2, j], oMissing);
rng.Value2 = point.StationName;
}

if (((Excel.Range)worksheet.Cells[1, j]).Text.ToString() == "TYPE")
{
rng = worksheet.get_Range(worksheet.Cells[i + 2, j], oMissing);
rng.Value2 = point.IOType;
}

if (((Excel.Range)worksheet.Cells[1, j]).Text.ToString() == "ADDR")
{
rng = worksheet.get_Range(worksheet.Cells[i + 2, j], oMissing);
rng.Value2 = point.Add;
}
}
}

worksheet.SaveAs(filepath, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing);

KillExcelApp(excApp, worksheet);
}

catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

}

rng = worksheet.get_Range(worksheet.Cells[i+2, j], oMissing);
这句出错
关于Excel.Range类型和get_Range到底怎么用啊？

[redfield123]

MSDN和Baidu都找了，但是还是不明白get_Range怎么用

[oliver2378]

同样一直迷惑中，帮顶

[萧炎]

LZ咋的意思就是导出个嘛

  //我做的导出LZ看看
  /// <param name="mydgv"></param>
        public void Exportdatagridviewtoexcel(DataGridView mydgv)
        {
            if (mydgv.Rows.Count == 0)
            {
                MessageBox.Show(" 没有数据可供导出！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
            else
            {
                SaveFileDialog savedialog = new SaveFileDialog();
                savedialog.DefaultExt = "xlsx";
                savedialog.Filter = "microsoft office execl files (*.xlsx)|*.xlsx";
                savedialog.FilterIndex = 0;
                savedialog.RestoreDirectory = true;
                savedialog.Title = "导出数据到excel表格";
                savedialog.ShowDialog();
                if (savedialog.FileName.IndexOf(":") < 0) return; //被点了取消  
                //Microsoft.office.interop.excel.application xlapp = new microsoft.office.interop.excel.application();
                Microsoft.Office.Interop.Excel.Application xlapp = new Microsoft.Office.Interop.Excel.Application();
                if (xlapp == null)
                {
                    MessageBox.Show("可能您的机子未安装excel，无法创建excel对象！", "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }

                Microsoft.Office.Interop.Excel.Workbooks workbooks = xlapp.Workbooks;
                Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
                Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1  
                //定义表格内数据的行数和列数   
                int rowscount = mydgv.Rows.Count;
                int colscount = mydgv.Columns.Count;
                //行数不可以大于65536   
                if (rowscount > 65536)
                {
                    MessageBox.Show("数据行记录超过65536行，不能保存！", "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    return;
                }
                //列数不可以大于255   
                if (colscount > 256)
                {
                    MessageBox.Show("数据列记录超过256列，不能保存！", "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    return;
                }
                //写入标题
                for (int i = 0; i < mydgv.ColumnCount; i++)
                {
                    worksheet.Cells[1, i + 1] = mydgv.Columns[i].HeaderText;
                }
                //写入数值
                for (int r = 0; r < mydgv.Rows.Count; r++)
                {
                    for (int i = 0; i < mydgv.ColumnCount; i++)
                    {
                        if (mydgv[i, r].ValueType == typeof(string))
                        {
                            worksheet.Cells[r + 2, i + 1] = "" + mydgv.Rows[r].Cells[i].Value;//将长数值转换成文本
                        }
                        else
                        {
                            worksheet.Cells[r + 2, i + 1] = mydgv.Rows[r].Cells[i].Value;
                        }
                    }
                    System.Windows.Forms.Application.DoEvents();
                }
                worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
                if (savedialog.FileName != "")
                {
                    try
                    {
                        workbook.Saved = true;
                        workbook.SaveCopyAs(savedialog.FileName);
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("导出文件时出错,文件可能正被打开！..." + ex.Message, "系统提示 ", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }

                }
                //GC.Collect();//强行销毁  
                MessageBox.Show("数据导出成功！ ", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
                           }
        }

[lsz2012]

[Quote=引用 1 楼 redfield123 的回复:]
MSDN和Baidu都找了，但是还是不明白get_Range怎么用
[/Quote]

rng = worksheet.get_Range(worksheet.Cells[i+2, j], oMissing);
这样写不对
应该这样写
rng = worksheet.get_Range(worksheet.Cells[i, j],worksheet.Cells[i+2, j]);

get_Range(worksheet.cells[行,列],worksheet.cells[行,列])
例如在Excel 选中第(A1,B4)范围 :
worksheet.get_Range(worksheet.Cells[1,1],worksheet.Cells[4,2])

[shupo]

同样一直迷惑中，帮顶

[redfield123]

明白了，谢谢！

Range类型可以是一个单元格，也可以是一行或者一列，还可以是一个区域。

get_Range就是获取一个单元区域，返回值为Range类型。

Workboos,Workbook,Worksheet,Range,Cells各个对象要搞清楚，类型不要整错了。