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[英]How to import specific cells of an Excel file into datagridview using c#
[英]How to append datagridview to excel file using c#
我正在尝试将datagridview内容导出到application.startuppath
中存在的excel文件。 我面临的问题是,每当我将网格内容导出到excel时,它就会覆盖以前的内容。 我想做的是附加到我的excel文件中,而不要覆盖现有内容。
这是我的代码:
Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Open(Application.StartupPath+"excelfile.xls");
Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
app.Visible = false;
worksheet = workbook.Sheets["Sheet1"];
worksheet = workbook.ActiveSheet;
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
for (int j = 0; j < dataGridView1.Columns.Count; j++)
{
if (dataGridView1.Rows[i].Cells[j].Value != null)
worksheet.Cells[i + 2, j + 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
else
worksheet.Cells[i + 2, j + 1] = "";
}
}
workbook.Close(SaveChanges: true);
app.Quit();
编辑:更新的代码:感谢@Alex Bell
int _offset = worksheet.UsedRange.Rows.Count;
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
for (int j = 1; j < dataGridView1.Columns.Count; j++)
{
if (dataGridView1.Rows[i].Cells[j].Value != null)
worksheet.Cells[i + 2 + _offset, j + 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
else
worksheet.Cells[i + 2 + _offset, j + 1] = "";
}
}
解决了我追加数据的问题,但是另一个小问题是,每次更新时,它都会在旧行和新行之间留下空白行。
根据您的情况,可以在循环中使用int _offset = worksheet.UsedRange.Rows.Count
作为行偏移量:
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++) { for (int j = 0; j < dataGridView1.Columns.Count; j++) { if (dataGridView1.Rows[i].Cells[j].Value != null) worksheet.Cells[i + 2 + _offset, j + 1] = dataGridView1.Rows[i].Cells[j].Value.ToString(); else worksheet.Cells[i + 2 + _offset, j + 1] = ""; } }
希望这会有所帮助。 问候,
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