Handle Null Value In Gridview During Exporting To Excel - excel

Question

I am working with a C# Windows application. Trying to export data from gridview to Excel , but when the gridview column is empty I do get error message.
How to handle that? Please help
This is my code
// Store Header from Gridview to Excel
for (int i = 1; i < dgvresult.Columns.Count + 1; i++)
{
Excel.Cells[1, i] = dgvresult.Columns[i - 1].HeaderText;
}
// Loop rows and columns of Gridview to store to Excel
for (int i = 0; i < dgvresult.Rows.Count; i++)
{
for (int j = 0; j < dgvresult.Columns.Count; j++)
{
Excel.Cells[i + 2, j + 1] = dgvresult.Rows[i].Cells[j].Value.ToString(); // Here when the value in Gridview is empty error how to handle this
}
}
Excel.ActiveWorkbook.SaveCopyAs("D:\\Asserts.xls");
Excel.ActiveWorkbook.Saved = true;
Excel.Quit();
MessageBox.Show("Excel file created,you can find the file D:\\Asserts.xls");
Excel.Visible = true;

Answer 1

Found solution do a checking by code below
private void btnexport_Click(object sender, EventArgs e)
{
Microsoft.Office.Interop.Excel.ApplicationClass Excel = new Microsoft.Office.Interop.Excel.ApplicationClass();
Excel.Application.Workbooks.Add(Type.Missing);
Excel.Columns.ColumnWidth = 14;
// Store Header from Gridview to Excel
for (int i = 1; i < dgvresult.Columns.Count + 1; i++)
{
Excel.Cells[1, i] = dgvresult.Columns[i - 1].HeaderText;
}
// Loop rows and columns of Gridview to store to Excel
for (int i = 0; i < dgvresult.Rows.Count; i++)
{
for (int j = 0; j < dgvresult.Columns.Count; j++)
{
if (dgvresult.Rows[i].Cells[j].Value == null)
{
dgvresult.Rows[i].Cells[j].Value = "NA"; // Where the gridview is empty do a checking and Insert NA
}
Excel.Cells[i + 2, j + 1] = dgvresult.Rows[i].Cells[j].Value.ToString();
}
}
Excel.ActiveWorkbook.SaveCopyAs("D:\\Asserts.xls");
Excel.ActiveWorkbook.Saved = true;
Excel.Quit();
MessageBox.Show("Excel file created,you can find the file D:\\Asserts.xls");
Excel.Visible = true;
}