数据集，gridview，数据表， [英] dataset,gridview,datatable,

问题描述

hi .....，

hi.....,

          DataView myDataView = new DataView();
          myDataView = ds1.Tables[0].DefaultView;
          if (sortExp != string.Empty)
          {
              myDataView.Sort = string.Format("{0}{1}",sortExp,sortDir);

          }

.....................
          grd.DataSource = myDataView;

          DataTable dt3 = new DataTable();
          dt3 = myDataView.Table.Copy();
          ds.Tables.Add(dt3);

我正在做的是在dataview(myDataView)中获取排序的数据. 现在我想将其添加到数据表或数据集中，这将在稍后的代码中使用，但是...它不添加排序的数据... ???

what I''m doing is getting sorted data in dataview (myDataView).!!
now i want to add it in datatable or dataset which will required later in the code but ...its not adding sorted data...???

推荐答案

您排序后可能需要bakup .......


像这样

ds.WriteXml("c://Backup.xml"); ///其中ds是数据集ds = new
DataSet();


当您需要再次将其加载到DataSet中时.....
像这样........

字符串myXMLfile ="C:\\ BackUp.xml";
DataSet ds = new DataSet();
试试
{
ds.ReadXml(myXMLfile);
dataGrid1.DataSource = ds;
}
catch(ex ex例外)
{
MessageBox.Show(ex.ToString());
}

you may take bakup after sorting .......


like this

ds.WriteXml("c://Backup.xml"); /// where ds is DataSet ds=new
DataSet();


when you need again load it in DataSet.....
like this........

string myXMLfile = "C:\\BackUp.xml";
DataSet ds = new DataSet();
try
{
ds.ReadXml(myXMLfile);
dataGrid1.DataSource = ds;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}

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