C# WinForm 读写XML文件

建立一个WinForm应用程序 添加MenuStrip控件，填写两个功能“读取” 和“导出数据”。

用了两个DataSet控件和对话框“打开(OpenFilesDialog控件)"和"保存(SaveFilesDialog控件)"

 

读取

 

        private void 读取ToolStripMenuItem_Click(object sender, EventArgs e)
        {
             if (opFileDlg .ShowDialog() == DialogResult.OK)
            {
                 if(opFileDlg .OpenFile()!=null)
                 {
                     twoXML .ReadXml (@opFileDlg .FileName );
                     foreach (DataRow twoRow in twoXML .Tables ["user"].Rows)
                     {
                         DataRow newRow = dsXML.Tables["user"].NewRow();
                        newRow ["序号"]  = twoRow ["序号"];
                        newRow["标题"] = twoRow["标题"];
                        newRow["网址"] = twoRow["网址"];
                        newRow["用户名"] = twoRow["用户名"];
                        newRow["密码"] = twoRow["密码"];
                        newRow["时间"] = twoRow["时间"];
                        newRow["备注"] = twoRow["备注"]; 
                        dsXML .Tables ["user"].Rows .Add(newRow);
 
                     }
                     int n = dsXML .Tables ["user"].Rows .Count ;
                     for(int i=0;i<n;i++)
                     {
                         dsXML .Tables ["user"].Rows [i]["序号"]=i+1;
                     }
                     dsXML.WriteXml(@"user.xml");
                     this.Visible = true; 
                     MessageBox.Show("数据导入成功！", "成功");
                 }
            }
            else
            {
               this.Visible  = true;
            }
        }

 

导出

        private void 导出ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (svFileDlg.ShowDialog() == DialogResult.OK)
            {
                dsXML.WriteXml(@svFileDlg.FileName);
                this.Visible = true;
                MessageBox.Show("数据导出成功！", "成功");
            }
            else
            {
               this.Visible  = true;
            }
        }