求C# ArcGIS Engine修改选中要素的属性，单要素都行

Question

哪位好心人能否给小弟提供一个关于C#结合ArcGIS Engine开发的源码！主要实现的功能是修改选中要素的属性值，并保存，对单要素进行修改就可以了！

Answer 1

RLAlterFrm RLalter = new RLAlterFrm();
            RLalter.ShowDialog();                string AlterID = RLalter.textBox1.Text;
                string AlterRP = RLalter.textBox2.Text;
                string AlterC = RLalter.textBox3.Text;
                   
            axMapControl1.ClearLayers();
                    axMapControl1.Refresh();                    try
                    {
                        string strFileName = Application.StartupPath + @"\数据\Roadlamp.mxd";
                        //在数据视图中加载地图，供查询操作
                        if (axMapControl1.CheckMxFile(strFileName))
                        {
                            axMapControl1.LoadMxFile(strFileName);
                        }
                        else
                        {
                            MessageBox.Show("错误的数据路径：" + strFileName);
                        }
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("Error01 in MainForm.cs" + ex.Message);
                    }
                    axMapControl1.Refresh();                    string strQK = RLalter.getQueryKey();//获取查询值                    //找到图层
                    IFeatureLayer pfeaturelayer = new FeatureLayer();
                    pfeaturelayer = axMapControl1.get_Layer(0) as IFeatureLayer;                    //找到要素
                    IQueryFilter pQueryFilter = new QueryFilter();
                    pQueryFilter.WhereClause = "[RL_ID] = '" + strQK + "'";                    IFeatureCursor pFeatureCur = pfeaturelayer.Search(pQueryFilter, false);                    IFeature pFeature = null;                    pFeature = pFeatureCur.NextFeature();                    if (null == pFeature)
                    {
                        MessageBox.Show("对不起！该元素不存在");
                    }                    else
                    {
                        IFields pFields = pFeature.Fields;
                        IFeatureClass pFeatureClass = pfeaturelayer.FeatureClass;                        //修改属性值 
                        int field1 = pFields.FindField("RL_ID");
                        int field2 = pFields.FindField("RL_RP");
                        int field3 = pFields.FindField("RL_C");
                        pFeature.set_Value(field1, AlterID);
                        pFeature.set_Value(field2, AlterRP);
                        pFeature.set_Value(field3, AlterC);
                        pFeature.Store();
                        MessageBox.Show("修改成功！","提示");
                    }
        }