c# - 将报告详细信息导出到 Excel 文件时出错

Question

我有一个生成报告并显示在 datagridview 中的表单，当用户单击“导出到 Excel”时，datagridview 中的数据被传输到 excel 文件中。但我有问题：gridview的第一行没有保存在excel文件中请帮忙

提前致谢

下面是我使用的代码

        if (dgvCreditLimitTransaction.RowCount >= 1)
        {
            // creating Excel Application 
            Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
            // creating new WorkBook within Excel application 
            Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
            // creating new Excelsheet in workbook 
            Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
            // see the excel sheet behind the program 
            app.Visible = true;
            // get the reference of first sheet. By default its name is Sheet1. 
            // store its reference to worksheet 
            worksheet = workbook.Sheets["Sheet1"];
            worksheet = workbook.ActiveSheet;
            // changing the name of active sheet 
            worksheet.Name = "Transaction Details";
            // storing header part in Excel 
            int hdinvdate = 0;
            for (int i = 2; i <= dgvCreditLimitTransaction.ColumnCount; i++)
            {
                worksheet.Cells[1, i] = dgvCreditLimitTransaction.Columns[i - 1].HeaderText;
                if (dgvCreditLimitTransaction.Columns[i - 1].HeaderText == "LC Number")
                {
                    hdinvdate = i - 1;
                }
            }
            // storing Each row and column value to excel sheet 
            for (int i = 0; i < dgvCreditLimitTransaction.Rows.Count; i++)
            {
                for (int j = 1; j < dgvCreditLimitTransaction.ColumnCount; j++)
                {
                    if (dgvCreditLimitTransaction.Rows[i].Cells[j].Value != null)
                    {
                        if (j == hdinvdate)
                        {

                            DateTime tempinvdt = Convert.ToDateTime(dgvCreditLimitTransaction.Rows[i].Cells[j].Value);

                            worksheet.Cells[i + 2, j + 1] = tempinvdt.ToString("MM/dd/yyyy");

                        }
                        else
                        {
                            worksheet.Cells[i + 2, j + 1] = dgvCreditLimitTransaction.Rows[i].Cells[j].Value.ToString();
                        }

                    }
                }
            }
            // Exit from the application 
            //           app.Quit();
        }
        else
        {
            MessageBox.Show("Please select Data");
        }

Answer 1

对您的代码所做的更改如下，并附有注释。我的理解是您想要 excel 电子表格中的第一列，而不是第一行。如果您需要任何调整，请给我留言，我会在更新时注明。

---

//I changed i=2 to i = 1 to get first column header
for (int i = 1; i <= dgvCreditLimitTransaction.ColumnCount; i++)
{
    worksheet.Cells[1, i] = dgvCreditLimitTransaction.Columns[i - 1].HeaderText;

    if (dgvCreditLimitTransaction.Columns[i - 1].HeaderText == "LC Number")
    {
        hdinvdate = i - 1;
    }
}


//changed i = 0 to i = 1 to remove the first row, if you wish to keep the first row set i = 0
for (int i = 0; i < dgvCreditLimitTransaction.RowCount; i++)
{
    //change j = 1 to j = 0 so that you get 1st columns data
    for (int j = 0; j < dgvCreditLimitTransaction.ColumnCount; j++)
    {
        if (dgvCreditLimitTransaction.Rows[i].Cells[j].Value != null)
        {
            if (j == hdinvdate)
            {

                DateTime tempinvdt = Convert.ToDateTime(dgvCreditLimitTransaction.Rows[i].Cells[j].Value);

                worksheet.Cells[i + 2, j + 1] = tempinvdt.ToString("MM/dd/yyyy");

            }
            else
            {
                worksheet.Cells[i + 2, j + 1] = dgvCreditLimitTransaction.Rows[i].Cells[j].Value.ToString();
            }

        }
    }
}
// Exit from the application 
//           app.Quit();
}
else
{
MessageBox.Show("Please select Data");
}