C++\CLI datagridview 导出到 excel .xls 文件

Question

我遇到的错误：不创建 excel 文件只是在后台进程中添加另一个 Microsoft excel 并且当我尝试更改文件位置时 saveFileDialog 崩溃：

saveFileDialog1->InitialDirectory = "C:";
saveFileDialog1->Title = "Save as Excel File";
saveFileDialog1->FileName = "";
saveFileDialog1->Filter = "Excel Files(2003)|*.xls|Excel Files(2007)|*.xlsx";
if(saveFileDialog1>ShowDialog()==System::Windows::Forms::DialogResult::OK){
Microsoft::Office::Interop::Excel::Application^ ExcelApp = gcnew Microsoft::Office::Interop::Excel::ApplicationClass();
ExcelApp->Workbooks->Add(Type::Missing);

for (int i = 1; i < datagridview1->Columns->Count + 1;i++)
{
ExcelApp->Cells[1, i] = datagridview1->Columns[i - 1]->HeaderText;
}

for (int i = 0; i < datagridview1->Rows->Count; i++)
{
for (int j = 0; j < datagridview1->Columns->Count; j++)
                {
ExcelApp->Cells[i+2,j+1] = datagridview1->Rows[i]->Cells[j]->Value->ToString();
}
}

ExcelApp->ActiveWorkbook->SaveCopyAs(saveFileDialog1->FileName->ToString());
ExcelApp->ActiveWorkbook->Saved=true;
ExcelApp->Quit();

Answer 1

我曾经遇到过类似的问题，问题出在将 datagridview1 写入文件的行和单元格中。代码应如下所示：

saveFileDialog1->Title = "Save as Excel File";
saveFileDialog1->FileName = "";
saveFileDialog1->Filter = "Excel Files(2003)|*.xls|Excel Files(2007)|*.xlsx";
if(saveFileDialog1>ShowDialog()==System::Windows::Forms::DialogResult::OK){
Microsoft::Office::Interop::Excel::Application^ ExcelApp = gcnew Microsoft::Office::Interop::Excel::ApplicationClass();
ExcelApp->Workbooks->Add(Type::Missing);

for (int i = 1; i < datagridview1->Columns->Count + 1;i++)
{
ExcelApp->Cells[1, i] = datagridview1->Columns[i - 1]->HeaderText;
}
for (int i = 0; i < datagridview1->Rows->Count; i++)
{
for (int j = 0; j < datagridview1->Columns->Count; j++)
            {
ExcelApp->Cells[i + 2, j + 1] = datagridview1->Rows[i]->Cells[j]->Value;
safe_cast<Range^>(ExcelApp->Cells[i + 2, j + 1]);    }
}
ExcelApp->ActiveWorkbook->SaveCopyAs(saveFileDialog1->FileName->ToString());
ExcelApp->ActiveWorkbook->Saved=true;
ExcelApp->Quit();

C++\CLI datagridview 导出到 excel .xls 文件

C++\CLI datagridview export to excel .xls file

excel

xls

datagridview

c++-cli