我不确定这里发生了什么。我使用这个按钮事件将数据从datagridview导出到excel,数据导出,文件保存等等,所以看起来对我来说工作正常。
private void button2_Click(object sender, EventArgs e)
{
Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
app.Visible = true;
try
{
worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Sheets["Sheet1"];
worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.ActiveSheet;
worksheet.Name = "Gioietta Environment Data";
for (int i = 1; i < dataGridView1.Columns.Count + 1; i++)
{
worksheet.Cells[1, i] = dataGridView1.Columns[i - 1].HeaderText;
}
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
for (int j = 0; j < dataGridView1.Columns.Count; j++)
{
worksheet.Cells[i + 2, j + 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
}
}
string fileName = String.Empty;
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "Excel files |*.xls|All files (*.*)|*.*";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
fileName = saveFileDialog1.FileName;
workbook.SaveAs(fileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
}
else
return;
}
catch (System.Exception ex)
{
}
finally
{
app.Quit();
workbook = null;
app = null;
}
}
我遇到的问题在于excel方面。基本上甚至将导出的值格式化为数字,我不能使用它们。我甚至无法总结它们!如果我手动重新键入同一单元格中的值而不是它可用。这与输出过程有关吗?
这是我将数据加载到datagridview的方式:
var time = DateTime.Now.ToString("HH:mm:ss");
dataGridView1.Rows.Add(new string[] { time, textBox1.Text, textBox2.Text });
答案 0 :(得分:1)
问题来自这一行以及如何填充DataGridView:
worksheet.Cells[i 2, j 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
数据导出为string
,无论.ToString()
的类型是什么,它们都是字符串。
由于DataGridViewCell.Value
包含string
,因此您必须在导出之前将dgvCell.Value强制转换为 numeric 值。例如:
if (j == 1 || j == 2)
{
worksheet.Cells(i 2, j 1) = Convert.ToDecimal(dataGridView1.Rows(i).Cells(j).Value)
}
else
{
worksheet.Cells[i 2, j 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
}
如果DataGridViewCell.Value包含 numeric 值(Decimal,Double,Integer,...),只需删除.toString()
,它应该按预期工作(Excel将设置相应的类型)。
在这两种情况下,如果您要应用自定义格式在Excel中显示,您将在导出期间将其丢失,并且必须使用Range.NumberFormat属性3}}在Excel中明确地设置它STRONG>。这些Q / A有助于实现这一目标: