【发布时间】：2010-09-15 07:58:52
【问题描述】：
在我的基于 Windows 的应用程序中（C#） 我想导入 excel 表以在 DatatGridView 中显示其数据 我不想使用 oledb
任何帮助
【问题讨论】：
【发布时间】：2010-09-15 07:58:52
【问题描述】：
using Excel = Microsoft.Office.Interop.Excel;
您显然需要将引用添加到您的项目中，然后就很简单了 :)
private void ProcessExcel(string filepath)
{
Excel.ApplicationClass ExcelObj = new Excel.ApplicationClass();
Excel.Workbook theWorkbook = ExcelObj.Workbooks.Open(filepath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
Excel.Sheets sheets = theWorkbook.Worksheets;
Excel.Worksheet worksheet = (Excel.Worksheet)sheets.get_Item(1);
Excel.Range range = worksheet.UsedRange;
System.Array myvalues = (System.Array)range.Cells.Value2;
int vertical = myvalues.GetLength(0);
int horizontal = myvalues.GetLength(1);
string[] headers = new string[horizontal];
string[] data = new string[horizontal];
DataTable ResultsHeader = New DataTable();
DataSet ds = New DataSet();
for (int x = 1; x <= vertical; x++)
{
Utils.inicializarArrays(datos);
for (int y = 1; y <= horizontal; y++)
{
if (x == 1)
{
headers[y - 1] = myvalues.GetValue(x, y).ToString();
}
else
{
string auxdata = "";
if (myvalues.GetValue(x, y) != null)
auxdata = myvalues.GetValue(x, y).ToString();
data[y - 1] = auxdata;
}
}
if(x == 1) //headers
{
for(int w = 0; w < horizontal; w++)
{
ResultsHeader.Columns.Add(New DataColumn(headers[w], GetType(string)));
}
ds.Tables.Add(ResultsHeader);
}
else
{
DataRow dataRow = ds.Tables[0].NewRow();
for(int w = 0; w < horizontal; w++)
{
dataRow(headers[w]) = data[w]
}
ds.Tables[0].Rows.Add(dataRow);
}
}
DataView myDataView = new DataView();
myDataView.Table = ds.Tables[0];
MydataGrid.CurrentPageIndex = 0;
MydataGrid.DataSource = myDataView;
MydataGrid.DataBind();
}
【讨论】：
-
我怎样才能得到那个参考我无法找到你写的那个特定的参考
-
我在 C:\Program Files\Microsoft Visual Studio 9.0\Visual Studio Tools for Office\PIA\Office12\Microsoft.Office.Interop.Excel.dll 下有它
-
它工作得很好，但是我如何分隔每个单元格值并写入网格意味着如果在我的 excel 中我有列作为名称和年龄并且我想显示内容，因为它被单独放置在请问datagridview我可以有鳕鱼吗
-
试试看，然后 xD。这有点矫枉过正，但可能会奏效。
我迟到了，但我有一些值得补充的东西！我尝试了 Juan 的代码，但它没有立即编译。在研究了互联网几个小时后，我对其进行了一些修改，并让它完全按照原始海报的要求进行（因为我需要做同样的事情）。我不得不从其他来源拼凑代码，不幸的是，我没有跟踪我尝试和更改的点点滴滴，因此我无法对此发表太多评论。
以下代码适用于带有 .NET 3.5 的 Visual Studio 2008。此外，将数据放入数组时格式会丢失（例如，日期变为双精度，需要使用DateTime.FromOADate() 进行转换才能将其改回）。问题是您无法从编码的角度判断一个值是实际的双精度值还是日期，但是如果您提前知道一列将成为日期，则在将数据插入时对其进行格式化桌子。
private void processExcel(string filename)
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
var missing = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Open(filename, false, true, missing, missing, missing, true, Excel.XlPlatform.xlWindows, '\t', false, false, 0, false, true, 0);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
Excel.Range xlRange = xlWorkSheet.UsedRange;
Array myValues = (Array)xlRange.Cells.Value2;
int vertical = myValues.GetLength(0);
int horizontal = myValues.GetLength(1);
DataTable dt = new DataTable();
// must start with index = 1
// get header information
for (int i = 1; i <= horizontal; i++)
{
dt.Columns.Add(new DataColumn(myValues.GetValue(1,i).ToString()));
}
// Get the row information
for (int a = 2; a <= vertical; a++)
{
object[] poop = new object[horizontal];
for (int b = 1; b <= horizontal; b++)
{
poop[b - 1] = myValues.GetValue(a, b);
}
DataRow row = dt.NewRow();
row.ItemArray = poop;
dt.Rows.Add(row);
}
// assign table to default data grid view
dataGridView1.DataSource = dt;
xlWorkBook.Close(true, missing, missing);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
【讨论】：
上面的那些代码不起作用。 该代码适用于我（.NET Framework 4.7.1）
private void processExcel(string filename)
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
var missing = System.Reflection.Missing.Value;
xlApp = new Excel.Application();
xlWorkBook = xlApp.Workbooks.Open(filename, false, true, missing, missing, missing, true, Excel.XlPlatform.xlWindows, '\t', false, false, 0, false, true, 0);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
Excel.Range xlRange = xlWorkSheet.UsedRange;
Array myValues = (Array)xlRange.Cells.Value2;
int vertical = myValues.GetLength(0);
int horizontal = myValues.GetLength(1);
DataTable dt = new DataTable();
// must start with index = 1
// get header information
try
{
for (int i = 1; i <= horizontal; i++)
{
dt.Columns.Add(new DataColumn(Convert.ToString(myValues.GetValue(1, i))));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
// Get the row information
for (int a = 2; a <= vertical; a++)
{
object[] rows = new object[horizontal];
for (int b = 1; b <= horizontal; b++)
{
rows[b - 1] = myValues.GetValue(a, b);
}
DataRow row = dt.NewRow();
row.ItemArray = rows;
dt.Rows.Add(row);
}
// assign table to default data grid view
dataGridView1.DataSource = dt;
xlWorkBook.Close(true, missing, missing);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
【讨论】：