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  • 简单的Datable转List方法

    public static class DataTableUtils<T> where T : new()
        {
            public static List<T> ConvertToModel(DataTable dt)
            {
                try
                {
                    if (dt == null || dt.Rows.Count == 0)
                    {
                        throw new Exception("DataTable is Null!");
                    }
                    List<T> ts = new List<T>();
                    Type type = typeof(T);
                    string tempName = string.Empty;
                    foreach (DataRow dr in dt.Rows)
                    {
                        T t = new T();
                        // 获得此模型的公共属性  
                        PropertyInfo[] propertys = t.GetType().GetProperties();
                        foreach (PropertyInfo pi in propertys)
                        {
                            tempName = pi.Name;
                            if (dt.Columns.Contains(tempName))
                            {
                                if (!pi.CanWrite)
                                    continue;
                                object value = dr[tempName];
                                if (value is DBNull)
                                    continue;
                                if (pi.PropertyType.Name.ToLower() == "string")
                                {
                                    if (value.GetType().Name.ToLower() == "guid")
                                    {
                                        pi.SetValue(t, value.ToString(), null);
                                    }
                                    else if (value.GetType().Name.ToLower() == "datetime")
                                    {
                                        pi.SetValue(t, Convert.ToDateTime(value).ToString("yyyy-MM-dd HH:mm:ss"), null);
                                    }
                                    else
                                    {
                                        pi.SetValue(t, Convert.ToString(value), null);
                                    }
                                }
                                else if (pi.PropertyType.Name.ToLower() == "lookupmodel")
                                {
                                    if (dt.Columns.Contains(string.Concat(tempName, "Name")))
                                    {
                                        object valuename = dr[string.Concat(tempName, "Name")];
                                        if (valuename != DBNull.Value)
                                        {
                                            LookUpModel lum = new LookUpModel();
                                            lum.id = Convert.ToString(value);
                                            lum.name = Convert.ToString(valuename);
                                            pi.SetValue(t, lum, null);
                                        }
                                        else
                                        {
                                            throw new Exception(string.Format("The value of column '{0}' is null!", string.Concat(tempName, "Name")));
                                        }
                                    }
                                    else
                                    {
                                        throw new Exception(string.Format("The column '{0}' dose not exist!", string.Concat(tempName, "Name")));
                                    }
                                }
    
                                else if (pi.PropertyType.Name.ToLower() == "int32" || pi.PropertyType.Name.ToLower() == "nullable`1")
                                {
                                    pi.SetValue(t, Convert.ToInt32(value), null);
                                }
                                else if (pi.PropertyType.Name.ToLower() == "decimal")
                                {
                                    pi.SetValue(t, Convert.ToDecimal(value), null);
                                }
                                else if (pi.PropertyType.Name.ToLower() == "datetime")
                                {
                                    pi.SetValue(t, Convert.ToDateTime(value), null);
                                }
                                else if (pi.PropertyType.Name.ToLower() == "boolean")
                                {
                                    pi.SetValue(t, Convert.ToBoolean(value), null);
                                }
    
                            }
                        }
                        ts.Add(t);
                    }
                    return ts;
                }
                catch (Exception)
                {
                    throw;
                }
            }
        }
    螃蟹在剥我的壳,笔记本在写我。 漫天的我落在枫叶雪花上。 而你在想我。
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  • 原文地址:https://www.cnblogs.com/skytitan/p/9855694.html
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