我如何從datagridview中寫入文件

Question

我試圖從datagridview中寫入，目標是將輸入保存到xml文件，但沒有正確地得到它。下面是我的代碼

  XDocument doc = XDocument.Load(outputFilePath); 
      doc.Save(outputFilePath); 
      oDataSet = new DataSet(); 

      foreach (DataGridViewRow _rows in Gridview_Output.Rows) 
      { 
       DataRow oDatarow = oDataTable.NewRow(); 
       for (int i = 0; i < Gridview_Output.ColumnCount; i++) 
       { 
        oDataTable.Rows.Add(oDatarow.ItemArray); 
       } 
      } 
      oDataSet.Tables.Add(oDataTable); 
      oDataSet.WriteXml(outputFilePath); 
      doc.Save(outputFilePath); 

我想寫這個空標籤

<data name="Exit_Button" xml:space="preserve"> 
<value></value> 
<comment>[Font][/Font][DateStamp][/DateStamp][Comment][/Comment]</comment> 
</data> 

Answer 1

嗯試試這個從GridView的

private DataTable GetDataTableFromDGV(DataGridView dgv) { 

     var dt = new DataTable(); 
     foreach (DataGridViewColumn column in dgv.Columns) { 
      if (column.Visible) { 
       // You could potentially name the column based on the DGV column name (beware of dupes) 
       // or assign a type based on the data type of the data bound to this DGV column. 
       dt.Columns.Add(); 
      } 
     } 

     object[] cellValues = new object[dgv.Columns.Count]; 
     foreach (DataGridViewRow row in dgv.Rows) { 
      for (int i = 0; i < row.Cells.Count; i++) { 
       cellValues[i] = row.Cells[i].Value; 
      } 
      dt.Rows.Add(cellValues); 
     } 

     return dt; 
    } 

然後創建一個數據表，你可以做

DataTable dT = GetDataTableFromDGV(DataGridView1); 
      DataSet dS = new DataSet(); 
      dS.Tables.Add(dT); 
      dS.WriteXml(File.OpenWrite("xml.xml"));