Question

我有这个代码，它给了我这个错误我试图很难解决这个但我没有运气。此方法用于通过给出select语句，tablename和dataset来更新mysql中的表。错误是“更新无法找到TableMapping ['tblapartments']或DataTable'tblapartments'。”

public bool UpdateDatabase(string SelectStat, string tablename, DataSet dataset)
{
    try
    {
        MySqlDataAdapter da = new MySqlDataAdapter(SelectStat, _conn);
        MySqlCommandBuilder MYCB = new MySqlCommandBuilder(da);
        DataSet ds = dataset;
        da.MissingSchemaAction = MissingSchemaAction.AddWithKey;

        da.Update(ds, tablename);
        MySqlConnection.ClearAllPools();
        return true;
    }
    catch (Exception ex)
    {
        return false;
    }

}

这是用于调用方法的整个方法。

 DataTable dt = (DataTable)dtgApartList.DataSource;
 DataSet ds = GlobalVariables.Adap.GetTableCus("SELECT NameNo, MaintenanceFee, AdminFee  FROM tblapartments WHERE BuildingID = '" + cmbBuildingName.SelectedValue.ToString() + "'");
 ds.Tables[0].Merge(dt, false);
 GlobalVariables.Adap.UpdateDatabase("SELECT NameNo, MaintenanceFee, AdminFee  FROM tblapartments WHERE BuildingID = '" + cmbBuildingName.SelectedValue.ToString() + "'", "tblapartments", ds);

Answer 1

我弄清楚我做错了什么我需要mapp这里的表是固定代码

public bool UpdateDatabase(string SelectStat, string tablename, DataSet dataset)
{
    try
    {
        MySqlDataAdapter da = new MySqlDataAdapter(SelectStat, _conn);
        MySqlCommandBuilder MYCB = new MySqlCommandBuilder(da);
        DataSet ds = dataset;
        da.MissingSchemaAction = MissingSchemaAction.AddWithKey;
        //Added this
        ITableMapping testing = da.TableMappings.Add(tablename,"Table");
        da.Update(ds, tablename);
        MySqlConnection.ClearAllPools();
        return true;
    }
    catch (Exception ex)
    {
        return false;
    }

}

更新mysql表会出错

1 个答案: