Question

我在数据库中有3行数据。我首先将这些数据加载到数据集中，但未能将这3行加载到dgvCustListing中。它只加载最后一个数据，顶部有3个空格。有人可以指出我的错误吗？

谢谢。

private void LoadCustListing()
    {
        string sQuery = string.Empty;
        int rowcount = 0;
        dgvCustListing.Rows.Clear();
        string spartyConn = ProcessData.GetpartyConnStr();
        using (SqlConnection Conn = new SqlConnection(spartyConn))
        {
            try
            {
                Conn.Open();
                SqlCommand Cmd = new SqlCommand();
                Cmd.Connection = Conn;
                Cmd.CommandTimeout = 1000;


                sQuery = "select pd.Party_Id, pd.Outlet_StoreNo, 'storename', pd.Party_Date, 'time', bc.Child_Name, pd.Party_Status "
                + "from Party_Dtl pd inner join Bday_Child bc "
                + "on pd.Child_Id = bc.Child_Id "
                + "inner join Cust_Dtl cd "
                + "on bc.Parent_Id = cd.Parent_Id "
                + "where pd.Party_Status = 'open' ";

                Cmd.CommandText = sQuery.ToString();
                SqlDataAdapter ExportAdapter = new SqlDataAdapter(sQuery, Conn);
                ExportAdapter.SelectCommand.CommandTimeout = 10000;
                DataSet DSCust_Listing = new DataSet();
                ExportAdapter.Fill(DSCust_Listing, "Cust_Listing");

                foreach (DataRow DSRow in DSCust_Listing.Tables["Cust_Listing"].Rows)
                {
                    rowcount += 1;
                    dgvCustListing.Rows.Add();
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[0].Value = rowcount;
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[2].Value = DSRow["Outlet_StoreNo"];
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[3].Value = "storename";//DSRow["Outlet"];
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[4].Value = DateTime.Parse(DSRow["Party_Date"].ToString());
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[5].Value = "time";//DSRow["Party_Time"]; //Time + AMPM
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[6].Value = DSRow["Child_Name"];
                    dgvCustListing.Rows[dgvCustListing.RowCount - 1].Cells[7].Value = DSRow["Party_Status"];
                }
            }
            catch (Exception ex)
            {
                if (ex.Message != "Exception from HRESULT: 0x800A03EC")
                {

                }
            }
            finally
            {
                Conn.Close();
            }
        }
    }

click for dgvCustListing image

Answer 1

我认为你应该使用

dgvCustListing.Rows [rowcount - 1] = .....

..我想

Answer 2

而不是迭代集合并逐行添加，为什么不使用如下的绑定？

dgvCustListing.AutoGenerateColumns = true;
dgvCustListing.DataSource = DSCust_Listing; // is your dataset
dgvCustListing.DataMember = "Cust_Listing"; // is your table name to bind

由于您只有一个查询要执行，因此您不需要使用DataSet，而是可以使用适配器将结果填充到DataTable。让DTCust_Listing成为该数据表，然后您可以将其DataSource分配给dgvCustListing

Answer 3

我认为你不需要DataSet。 dataSet是表集合的内存表示。你可以改为使用DataTable。

声明数据表

DataTable DSCust_Listing = new DataTable();

而不是循环遍历DataSet，只需执行

if(DSCust_Listing != null)
{
    dgvCustListing.DataSource = DSCust_Listing;
    dgvCustListing.DataBind();
}

应该这样做。

C＃将数据集中的数据插入到datagridview中

3 个答案: