asp.ent merges two DataTable with the same structure
- 2020-05-07 19:30:14
- OfStack
I wrote a function.
Due to my limited understanding of C#, I do not understand why dt1==null cannot correctly judge the empty table, so I use the method of counting lines. I also hope that the superior can give advice to 12.
/// <summary>
/// Merge two identical ones DataTable, Returns the combined result
/// </summary>
/// <param name="dt1"></param>
/// <param name="dt2"></param>
/// <returns></returns>
public DataTable CombineTheSameDatatable(DataTable dt1, DataTable dt2)
{
if (dt1.Rows.Count == 0 && dt2.Rows.Count == 0)
{
return new DataTable();
}
if (dt1.Rows.Count == 0)
{
return dt2;
}
if (dt2.Rows.Count == 0)
{
return dt1;
}
DataSet ds = new DataSet();
ds.Tables.Add(dt1.Copy());
ds.Merge(dt2.Copy());
return ds.Tables[0];
}
Due to my limited understanding of C#, I do not understand why dt1==null cannot correctly judge the empty table, so I use the method of counting lines. I also hope that the superior can give advice to 12.