Ilist 转换成 DataSet

最新推荐文章于 2019-11-03 16:55:45 发布

CodingSir

最新推荐文章于 2019-11-03 16:55:45 发布

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CC 4.0 BY-SA版权

文章标签： dataset null string

本文链接：https://blog.youkuaiyun.com/educast/article/details/2895024

本文介绍了一种将IList集合转换为DataSet和DataTable的方法。通过反射获取对象属性，并将其填充到数据表中，适用于.NET应用程序的数据转换场景。

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///

/// Ilist 转换成 DataSet
///

        ///
        ///
        public static DataSet ConvertToDataSet(IList i_objlist)
        {
            if (i_objlist == null || i_objlist.Count <= 0)
            {
                return null;
            }

            DataSet ds = new DataSet();
            DataTable dt = new DataTable(typeof(T).Name);
            DataColumn column;
            DataRow row;

System.Reflection.PropertyInfo[] myPropertyInfo = typeof(T).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);

            foreach (T t in i_objlist)
            {
                if (t == null)
                {
                    continue;
                }

row = dt.NewRow();

                for (int i = 0, j = myPropertyInfo.Length; i < j; i++)
                {
                    System.Reflection.PropertyInfo pi = myPropertyInfo[i];

string name = pi.Name;

                    if (dt.Columns[name] == null)
                    {
                        column = new DataColumn(name, pi.PropertyType);
                        dt.Columns.Add(column);
                    }

row[name] = pi.GetValue(t, null);
}

dt.Rows.Add(row);
}

ds.Tables.Add(dt);

            return ds;
        }
        ///

/// Ilist 转换成 DataTable
///

        ///
        ///
        public static DataTable ConvertToDataTable(IList i_objlist)
        {
            if (i_objlist == null || i_objlist.Count <= 0)
            {
                return null;
            }
            DataTable dt = new DataTable(typeof(T).Name);
            DataColumn column;
            DataRow row;

System.Reflection.PropertyInfo[] myPropertyInfo = typeof(T).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);

            foreach (T t in i_objlist)
            {
                if (t == null)
                {
                    continue;
                }

row = dt.NewRow();

                for (int i = 0, j = myPropertyInfo.Length; i < j; i++)
                {
                    System.Reflection.PropertyInfo pi = myPropertyInfo[i];

string name = pi.Name;

                    if (dt.Columns[name] == null)
                    {
                        column = new DataColumn(name, pi.PropertyType);
                        dt.Columns.Add(column);
                    }

row[name] = pi.GetValue(t, null);
}

                dt.Rows.Add(row);
            }
            return dt;
        }
        ///

/// Ilist 转换成 DataTable
///

        ///
        ///
        public static DataTable ConvertToDataTable(IList i_objlist)
        {
            if (i_objlist == null || i_objlist.Count <= 0)
            {
                return null;
            }
            DataTable dt = new DataTable();
            DataRow row;

System.Reflection.PropertyInfo[] myPropertyInfo = i_objlist[0].GetType().GetProperties();

            foreach (System.Reflection.PropertyInfo pi in myPropertyInfo)
            {
                if (pi == null)
                {
                    continue;
                }
                dt.Columns.Add(pi.Name, System.Type.GetType(pi.PropertyType.ToString()));
            }
            for (j = 0; j < i_objlist.Count; j++)
            {
                row = dt.NewRow();
                for (int i = 0; i < myPropertyInfo.Length; i++)
                {
                    System.Reflection.PropertyInfo pi = myPropertyInfo[i];
                    row[pi.Name] = pi.GetValue(t, null);
                }
                dt.Rows.Add(row);
            }
            return dt;
        }
        ///

/// Ilist 转换成 DataSet
///

        ///
        ///
        public static DataSet ConvertToDataSet(IList i_objlist)
        {
            if (i_objlist == null || i_objlist.Count <= 0)
            {
                return null;
            }
            DataSet ds = new DataSet();
            DataTable dt = new DataTable();
            DataRow row;

System.Reflection.PropertyInfo[] myPropertyInfo = i_objlist[0].GetType().GetProperties();