为什么第一行数据一半导入到datagridview而其余的全部导入？

Question

如展示in this screen recording我有两个datagridviews dgv1和dgv2，其中三列有两列DataGridViewTextBox列和一个DataGridViewCheckBox列，我创建了一些行dgv1。

dt1 = new DataTable();
dt1.Columns.Add(new DataColumn("Name", typeof(string)));
dt1.Columns.Add(new DataColumn("Descripton", typeof(string)));

dt1.Rows.Add(new object[] { "Grant", "the couch guy" });
dt1.Rows.Add(new object[] { "Mike", "the pizza guy" });
dt1.Rows.Add(new object[] { "Lee", "don't cross me guy" });
dt1.Rows.Add(new object[] { "Adamn", "the number guy" });
dt1.Rows.Add(new object[] { "Freddy", "I love my pork chops" });
dt1.Rows.Add(new object[] { "Gus", "Me and my chicken" });
dt1.Rows.Add(new object[] { "Walt", "i love my blue" });
dt1.Rows.Add(new object[] { "Saul", "mind you, I'm a lawyer" });
dt1.Rows.Add(new object[] { "Jessy", "i need to charge my batteries" });

dataGridView1.AutoGenerateColumns = false;
dataGridView1.DataSource = dt1;
dataGridView1.Columns[0].DataPropertyName = dt1.Columns[0].ColumnName;
dataGridView1.Columns[1].DataPropertyName = dt1.Columns[1].ColumnName;

我已编写代码将数据发送到dgv2，数据将在每个已检查事件中作为行发送。所以我使用了这些事件，CellValueChnaged()和CurrentCellDirtyStateChnaged(). In this link包含了代码，有趣的是它导入了点击行第一行的一半数据并将其保留为导入成功了，我正在试图弄清楚问题是几个小时，但顺便说一句也没有一条线索:(

任何人都可以看到这段代码的问题吗？

这是完整的代码：

namespace dgvRowBinding
{
    public partial class Form1 : Form
    {
        DataTable dt1;
        DataTable dt2;
        bool isDataReady = false;

        TreeNode tnOne;
        TreeNode tnTwo;
        TreeNode tnThree;
        TreeNode tnFour;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            tnOne = new TreeNode("Node #1");
            tnOne.Tag = 1;

            tnTwo = new TreeNode("Node #2");
            tnTwo.Tag = 2;

            tnThree = new TreeNode("Node #3");
            tnThree.Tag = 3;

            tnFour = new TreeNode("Node #4");
            tnFour.Tag = 4;

            tv.Nodes.Add(tnOne);
            tv.Nodes.Add(tnTwo);
            tv.Nodes.Add(tnThree);
            tv.Nodes.Add(tnFour);

            dt1 = new DataTable();
            dt1.Columns.Add(new DataColumn("Name", typeof(string)));
            dt1.Columns.Add(new DataColumn("Descripton", typeof(string)));

            dt1.Rows.Add(new object[] { "Grant", "the couch guy" });
            dt1.Rows.Add(new object[] { "Mike", "the pizza guy" });
            dt1.Rows.Add(new object[] { "Lee", "don't cross me guy" });
            dt1.Rows.Add(new object[] { "Adamn", "the number guy" });
            dt1.Rows.Add(new object[] { "Freddy", "I love my pork chops" });
            dt1.Rows.Add(new object[] { "Gus", "Me and my chicken" });
            dt1.Rows.Add(new object[] { "Walt", "i love my blue" });
            dt1.Rows.Add(new object[] { "Saul", "mind you, I'm a lawyer" });
            dt1.Rows.Add(new object[] { "Jessy", "i need to charge my batteries" });

            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.DataSource = dt1;
            dataGridView1.Columns[0].DataPropertyName = dt1.Columns[0].ColumnName;
            dataGridView1.Columns[1].DataPropertyName = dt1.Columns[1].ColumnName;


            isDataReady = true;

            dt2 = new DataTable();
            dt2.Columns.Add(new DataColumn("Name", typeof(string)));
            dt2.Columns.Add(new DataColumn("Description", typeof(string)));
        }

        private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                if (isDataReady)
                {
                    if (Convert.ToBoolean(dataGridView1[2, e.RowIndex].Value) == true)
                    {
                        DataRow dr1 = ((DataRowView)(dataGridView1.Rows[e.RowIndex].DataBoundItem)).Row;

                        dt2.ImportRow(dr1);

                        dt2.Columns[0].ColumnName = dt1.Columns[0].ColumnName;
                        dt2.Columns[1].ColumnName = dt1.Columns[1].ColumnName;

                        dataGridView2.AutoGenerateColumns = false;
                        dataGridView2.DataSource = dt2;
                        dataGridView2.Columns[0].DataPropertyName = dt2.Columns[0].ColumnName;
                        dataGridView2.Columns[1].DataPropertyName = dt2.Columns[1].ColumnName;
                    } 
                }
            }
            catch
            {                
                throw;
            }
        }

        private void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
        {
            try
            {
                if (isDataReady == true)
                {
                    if (dataGridView1.IsCurrentCellDirty == true)
                    {
                        if (dataGridView1.CurrentCell is DataGridViewCheckBoxCell)
                        {
                            dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
                        }
                    }
                }
            }
            catch
            {

                throw;
            }
        }
    }

    struct MyStruct
    {

    }
}

感谢

Answer 1

为什么要在每次点击时更改dataGridView2属性？您必须将数据源设置移动到负载。试试这个。 （只是输入此处未经测试）

namespace dgvRowBinding
{
    public partial class Form1 : Form
    {
        DataTable dt1;
        DataTable dt2;
        bool isDataReady = false;

        TreeNode tnOne;
        TreeNode tnTwo;
        TreeNode tnThree;
        TreeNode tnFour;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            tnOne = new TreeNode("Node #1");
            tnOne.Tag = 1;

            tnTwo = new TreeNode("Node #2");
            tnTwo.Tag = 2;

            tnThree = new TreeNode("Node #3");
            tnThree.Tag = 3;

            tnFour = new TreeNode("Node #4");
            tnFour.Tag = 4;

            tv.Nodes.Add(tnOne);
            tv.Nodes.Add(tnTwo);
            tv.Nodes.Add(tnThree);
            tv.Nodes.Add(tnFour);

            dt1 = new DataTable();
            dt1.Columns.Add(new DataColumn("Name", typeof(string)));
            dt1.Columns.Add(new DataColumn("Descripton", typeof(string)));

            dt1.Rows.Add(new object[] { "Grant", "the couch guy" });
            dt1.Rows.Add(new object[] { "Mike", "the pizza guy" });
            dt1.Rows.Add(new object[] { "Lee", "don't cross me guy" });
            dt1.Rows.Add(new object[] { "Adamn", "the number guy" });
            dt1.Rows.Add(new object[] { "Freddy", "I love my pork chops" });
            dt1.Rows.Add(new object[] { "Gus", "Me and my chicken" });
            dt1.Rows.Add(new object[] { "Walt", "i love my blue" });
            dt1.Rows.Add(new object[] { "Saul", "mind you, I'm a lawyer" });
            dt1.Rows.Add(new object[] { "Jessy", "i need to charge my batteries" });

            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.DataSource = dt1;
            dataGridView1.Columns[0].DataPropertyName = dt1.Columns[0].ColumnName;
            dataGridView1.Columns[1].DataPropertyName = dt1.Columns[1].ColumnName;


            isDataReady = true;

            dt2 = new DataTable();
            dt2.Columns.Add(new DataColumn("Name", typeof(string)));
            dt2.Columns.Add(new DataColumn("Description", typeof(string)));

            dt2.Columns[0].ColumnName = dt1.Columns[0].ColumnName;
            dt2.Columns[1].ColumnName = dt1.Columns[1].ColumnName;

            dataGridView2.AutoGenerateColumns = false;
            dataGridView2.DataSource = dt2;
            dataGridView2.Columns[0].DataPropertyName = dt2.Columns[0].ColumnName;
            dataGridView2.Columns[1].DataPropertyName = dt2.Columns[1].ColumnName;

        }

        private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                if (isDataReady)
                {
                    if (Convert.ToBoolean(dataGridView1[2, e.RowIndex].Value) == true)
                    {
                        DataRow dr1 = ((DataRowView)(dataGridView1.Rows[e.RowIndex].DataBoundItem)).Row;

                        dt2.ImportRow(dr1);

                    } 
                }
            }
            catch
            {                
                throw;
            }
        }

        private void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
        {
            try
            {
                if (isDataReady == true)
                {
                    if (dataGridView1.IsCurrentCellDirty == true)
                    {
                        if (dataGridView1.CurrentCell is DataGridViewCheckBoxCell)
                        {
                            dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
                        }
                    }
                }
            }
            catch
            {

                throw;
            }
        }
    }

    struct MyStruct
    {

    }
}