C# 使用存储在数据库表中的图像将Gridview数据导出到excel
我想将gridview导出到excel文件,但问题是gridview中的图像存储在数据库表中..顺便说一下,我存储的是整个图像,而不是图像的路径,我也想导出图像..下面是代码 但是当我运行这个时,它会给出异常。。请帮忙。。 多谢各位C# 使用存储在数据库表中的图像将Gridview数据导出到excel,c#,winforms,C#,Winforms,我想将gridview导出到excel文件,但问题是gridview中的图像存储在数据库表中..顺便说一下,我存储的是整个图像,而不是图像的路径,我也想导出图像..下面是代码 但是当我运行这个时,它会给出异常。。请帮忙。。 多谢各位 saveFileDialog1.Filter = "Excel (*.xls)|*.xls"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { i
saveFileDialog1.Filter = "Excel (*.xls)|*.xls";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
if (!saveFileDialog1.FileName.Equals(String.Empty))
{
FileInfo f = new FileInfo(saveFileDialog1.FileName);
if (f.Extension.Equals(".xls"))
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
int i = 0;
int j = 0;
for (int h = 1; h < grid.Columns.Count + 1; h++)
{
xlWorkSheet.Cells[1, h] = grid.Columns[h - 1].HeaderText;
}
for (i = 0; i <= grid.RowCount - 1; i++)
{
for (j = 0; j <= grid.ColumnCount - 1; j++)
{
DataGridViewCell cell = grid[j, i];
xlWorkSheet.Cells.Borders.LineStyle = Excel.XlLineStyle.xlContinuous;
xlWorkSheet.Columns.AutoFit();
xlWorkSheet.Cells[i + 2, j + 1] = cell.FormatedValue;
}
}
xlWorkBook.SaveAs(saveFileDialog1.FileName, Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
MessageBox.Show("Excel file created , you can find the file " + saveFileDialog1.FileName);
}
else
{
MessageBox.Show("Invalid file type");
}
}
else
{
MessageBox.Show("You did pick a location " +
"to save file to");
}
}
saveFileDialog1.Filter=“Excel(*.xls)|*.xls”;
if(saveFileDialog1.ShowDialog()==DialogResult.OK)
{
如果(!saveFileDialog1.FileName.Equals(String.Empty))
{
FileInfo f=newfileinfo(saveFileDialog1.FileName);
如果(f.扩展等于(“.xls”))
{
Excel.applicationxlapp;
Excel.工作簿;
Excel工作表;
对象错误值=System.Reflection.Missing.Value;
xlApp=new Excel.ApplicationClass();
xlWorkBook=xlApp.Workbooks.Add(错误值);
xlWorkSheet=(Excel.Worksheet)xlWorkBook.Worksheets.get_项(1);
int i=0;
int j=0;
对于(int h=1;h 对于(i=0;i),这里似乎有一些有用的信息:在谷歌搜索“c#write image to excel”时,也出现了一些其他页面。@David我在谷歌中搜索过,但找不到解决方案,如果有人知道,请帮助我。。。