DataTable的一个简单的扩展

我们在调试代码的时候经常遇到DataTable的数据类型错误,这个类可以帮助我们很快查看DataTable的结构信息.

 /// <summary>
 /// DataTable扩展类
 /// </summary>
 public static class DataTableExtensions
 {
     /// <summary>
     /// 显示DataTable的结构信息
     /// </summary>
     /// <param name="table">datatable</param>
     public static void LoadDataTableStructure(this DataTable table)
     {
         if (table == null)
         {
             System.Diagnostics.Debug.WriteLine("datatable is null.");
         }

         StringBuilder structureInfo = new StringBuilder();
         string colName = string.Empty;
         string colType = string.Empty;

         structureInfo.AppendLine("============================Begin=============================");
         structureInfo.AppendLine("TableName: " + table.TableName);
         structureInfo.AppendLine(string.Format("{0,-20}{1}", "ColumnName", "DataType"));

         foreach (DataColumn col in table.Columns)
         {
             colName = col.ColumnName;
             colType = col.DataType.ToString();
             structureInfo.AppendLine(string.Format("{0,-20}{1}", colName, colType));
         }

         structureInfo.AppendLine("=============================End==============================");
         System.Diagnostics.Debug.WriteLine(structureInfo.ToString());
     }
 }