[英]Exporting datagridview data into Excel Worksheet
我正在做一個項目,我需要將 datagridview 數據導出到 excel 表中。 我的 datagridview 有 38 列和大約 120 行(單詞之間有空格),數據是從 datagridview 輸入的。 當我運行該應用程序時,我收到此異常,“Object 引用未設置為 object 的實例。”。 這是我的代碼塊:
私人無效exportbtn_Click(對象發送者,EventArgs e)
if (saveFileDialog1.ShowDialog() != DialogResult.Cancel)
{
Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application();
ExcelApp.Application.Workbooks.Add(Type.Missing);
ExcelApp.Columns.AutoFit();
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();
}
MessageBox.Show("Data Exported Successfully");
}
ExcelApp.ActiveWorkbook.SaveAs("");
ExcelApp.ActiveWorkbook.Saved = true;
ExcelApp.Visible = true;
ExcelApp.Quit();
}
我將datagridview第一列(Facillity)填充為:
ArrayList row = new ArrayList();
row.Add("Techiman Holy Family Hospital"); dataGridView1.Rows.Add(row.ToArray());
row = new ArrayList();
row.Add("Opoku Agyeman Hospital"); dataGridView1.Rows.Add(row.ToArray());
row = new ArrayList();
row.Add("Kintampo Municipal Hospital"); dataGridView1.Rows.Add(row.ToArray());
此外,我不想在導出到 excel 的任何時候選擇新的 excel 工作簿。 我想將所有工作表保存在同一個工作簿中。 有沒有辦法編輯以下代碼來實現:
saveFileDialog1.InitialDirectory = ("C:");
saveFileDialog1.Title = "Save as Excel File";
saveFileDialog1.FileName = "";
saveFileDialog1.Filter = "Excel Files(2003)|*.xls| Excel Files(2007)|*.xlsx";
請問有什么幫助嗎? 謝謝。
首先,我建議你可以參考下面的代碼來給你的datagridview添加數據。
private void Form1_Load(object sender, EventArgs e)
{
DataTable table = new DataTable();
table.Columns.Add("Hospital");
table.Columns.Add("Name");
table.Columns.Add("Age");
table.Columns.Add("Address");
table.Columns.Add("Id");
table.Columns.Add("Sex");
table.Rows.Add("Techiman Holy Family Hospital", "test11", "22","home","1001","Man");
table.Rows.Add("Techiman Holy Family Hospital", "test2", "23", "home", "1001", "Man");
table.Rows.Add("Opoku Agyeman Hospital", "test8", "22", "home", "1001", "Man");
table.Rows.Add("Opoku Agyeman Hospital", "test6", "26", "home", "1001", "Man");
table.Rows.Add("Kintampo Municipal Hospital", "test21", "22", "home", "1001", "Man");
table.Rows.Add("Kintampo Municipal Hospita", "test12", "22", "home", "1001", "Man");
dataGridView1.DataSource = table;
}
其次,解決問題的關鍵是我們需要將dataGridView1.Rows.Count
更改為dataGridView1.Rows.Count-1
,因為datagirdview會自動生成一個空行。
最后,這是一個您可以參考的代碼示例。
private void button1_Click(object sender, EventArgs e)
{
saveFileDialog1.InitialDirectory = ("E:");
saveFileDialog1.Title = "Save as Excel File";
saveFileDialog1.FileName = "";
saveFileDialog1.Filter = "Excel Files(2003)|*.xls| Excel Files(2007)|*.xlsx";
if (saveFileDialog1.ShowDialog() != DialogResult.Cancel)
{
Excel.Application ExcelApp = new Excel.Application();
ExcelApp.Application.Workbooks.Add(Type.Missing);
ExcelApp.Columns.AutoFit();
Excel.Worksheet sheet = ExcelApp.ActiveSheet;
for (int i = 0; i < dataGridView1.Columns.Count; i++)
{
sheet.Cells[1, i+1] = dataGridView1.Columns[i].HeaderText;
}
for (int i = 0; i < dataGridView1.Rows.Count-1; i++)
{
for (int j = 0; j < dataGridView1.Columns.Count; j++)
{
sheet.Cells[i + 2, j + 1] = dataGridView1.Rows[i].Cells[j].Value.ToString();
}
}
MessageBox.Show("Data Exported Successfully");
sheet.SaveAs(saveFileDialog1.FileName);
ExcelApp.Visible = true;
ExcelApp.Quit();
}
}
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