Question

如何将数据网格中excel的导入数据保存到C＃中的数据库我已保存记录并导出到Excel工作表，它与数据ID一起导出，现在我已从excel重新导入到datagridview。现在我想将数据保存到数据库。

重要的是要知道：

使用SQL Compact 3.5的数据库名称“Records.sdf” DataGridViewName是RecordsDataGridView。

我正在使用以下代码，但它无效。

public void SaveData()
    {
        // Save the data.

        SqlCeConnection conn =
                new SqlCeConnection(
                   @"Data Source=|DataDirectory|\Records.sdf;Persist Security Info=False");

        SqlCeCommand com;
        string str;
        conn.Open();
        for (int index = 0; index < RecordsDataGridView.Rows.Count - 1; index++)
        {
            str = @"Insert Into OutgoingChequeRecords(ID,BankName,Date,AccountNo, Chequebook, ChequeNo, Payee, Amount, Remarks) Values(" + RecordsDataGridView.Rows[index].Cells[0].Value.ToString() + ", '" + RecordsDataGridView.Rows[index].Cells[1].Value.ToString() + "'," + RecordsDataGridView.Rows[index].Cells[2].Value.ToString() + "," + RecordsDataGridView.Rows[index].Cells[3].Value.ToString() + "," + RecordsDataGridView.Rows[index].Cells[4].Value.ToString() + "," + RecordsDataGridView.Rows[index].Cells[5].Value.ToString() + "," + RecordsDataGridView.Rows[index].Cells[6].Value.ToString() + "," + RecordsDataGridView.Rows[index].Cells[7].Value.ToString() + "," + RecordsDataGridView.Rows[index].Cells[8].Value.ToString() + ")";
            com = new SqlCeCommand(str, conn);
            com.ExecuteNonQuery();
        }
        conn.Close();
    }

收到错误 列名无效，列名=现金

Answer 1

您应该传递用单引号括起来的varchar字段。

 var str = @"Insert Into OutgoingChequeRecords(ID,BankName,Date,AccountNo, Chequebook, ChequeNo, Payee, Amount, Remarks) Values("
                       + RecordsDataGridView.Rows[index].Cells[0].Value.ToString() + ", '"
                       + RecordsDataGridView.Rows[index].Cells[1].Value.ToString() + "',"
                       + RecordsDataGridView.Rows[index].Cells[2].Value.ToString() + ","
                       + RecordsDataGridView.Rows[index].Cells[3].Value.ToString() + ","
                       + RecordsDataGridView.Rows[index].Cells[4].Value.ToString() + ","
                       + RecordsDataGridView.Rows[index].Cells[5].Value.ToString() + ","
                       + "'" + RecordsDataGridView.Rows[index].Cells[6].Value.ToString() + "'" + ","
                       + RecordsDataGridView.Rows[index].Cells[7].Value.ToString() + ","
                       + "'" + dataGridView1.Rows[index].Cells[8].Value.ToString() + "'" + ")";

Answer 2

尝试此查询字符串

 str = @"Insert Into OutgoingChequeRecords(ID,BankName,Date,AccountNo, Chequebook, ChequeNo, Payee, Amount, Remarks) Values(" + RecordsDataGridView.Rows[index].Cells[0].Value.ToString() + ",'"+ RecordsDataGridView.Rows[index].Cells[1].Value.ToString() + "'," + RecordsDataGridView.Rows[index].Cells[2].Value.ToString() + ",'" + RecordsDataGridView.Rows[index].Cells[3].Value.ToString() + "','" + RecordsDataGridView.Rows[index].Cells[4].Value.ToString() + "','" + RecordsDataGridView.Rows[index].Cells[5].Value.ToString() + "','" + RecordsDataGridView.Rows[index].Cells[6].Value.ToString() + "','" + RecordsDataGridView.Rows[index].Cells[7].Value.ToString() + "','" + RecordsDataGridView.Rows[index].Cells[8].Value.ToString() + "')";

Answer 3

有几种方法可以做到这一点。

这是一种方法。

private void save_btn_Click(object sender, EventArgs e)
{
    sAdapter.Update(sTable);
    dataGridView1.ReadOnly = true;
    save_btn.Enabled = false;
    new_btn.Enabled = true;
    delete_btn.Enabled = true;
}

http://csharp.net-informations.com/datagridview/csharp-datagridview-database-operations.htm

你也可以这样做。

string StrQuery;
try
{
    using (SqlConnection conn = new SqlConnection(ConnString))
    {
        using (SqlCommand comm = new SqlCommand())
        {
            comm.Connection = conn;
            conn.Open();
            for(int i=0; i< dataGridView1.Rows.Count;i++)
            {
                StrQuery= @"INSERT INTO tableName VALUES (" 
                    + dataGridView1.Rows[i].Cells["ColumnName"].Text+", " 
                    + dataGridView1.Rows[i].Cells["ColumnName"].Text+");";
                comm.CommandText = StrQuery;
                comm.ExecuteNonQuery();
            }
        }
    }
}

这样的东西也会起作用。

private void buttonSave_Click_1(object sender, EventArgs e) // save to invoice
{
    SqlConnection con = new SqlConnection(MyConnectionString);
    string SqlCmdText = "INSERT INTO invoice (p_code, p_name, p_category, p_price) " +
                                  VALUES (@code, @name, @category, @price)";
    SqlCommand sc = new SqlCommand(SqlCmdText, con);
    con.Open();
    foreach (DataRow row in MyTable.Rows)
    {
        sc.Parameters.Clear();
        sc.Parameters.AddWithValue("@code", row["p_code"]);
        sc.Parameters.AddWithValue("@name", row["p_name"]);
        sc.Parameters.AddWithValue("@category", row["p_category"]);
        sc.Parameters.AddWithValue("@price", row["p_price"]);
        sc.ExecuteNonQuery();
    }
    con.Close();
}

如何将datagridview中导入的excel保存到数据库C＃

3 个答案: