如何在Datagridview中应用拖放单元格内容 [英] How to apply drag drop cell content in datagridview

问题描述

我想将内容从一个单元格拖动到C#.net的同一datagridview中的另一个单元格中
有帮助吗?

提前感谢

I want to drag contents from one cell to another cell within the same datagridview in C#.net
Any Help??

Thanx in advance

推荐答案

在codeproject和google上有几篇文章解决了这个问题 ^ ]

特别是对于datagridview……并没有太大的不同……这段代码可能对您有帮助

there are a couple of articles on codeproject and google that address this issueDrag and Drop between list boxes - Beginner''s Tutorial[^]

and particularly for datagridview ... its not that much different... this code might help you

public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();

            //allow drop
            this.dataGridView1.AllowDrop = true;

            //data grid view sample data 
            DataTable dtb = new DataTable();
            dtb.Columns.AddRange(new DataColumn[] { new DataColumn(), new DataColumn(), new DataColumn() });
            
            for (int i = 0; i < 30;)
            {
                dtb.Rows.Add((++i).ToString(), (++i).ToString(), (++i).ToString());    
            }
            dataGridView1.DataSource = dtb;
        }

        private void dataGridView1_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                dataGridView1.DoDragDrop(dataGridView1[e.ColumnIndex,e.RowIndex].FormattedValue, DragDropEffects.Copy);
            }
        }

        private void dataGridView1_DragDrop(object sender, DragEventArgs e)
        {
            string cellvalue=e.Data.GetData(typeof(string)) as string;
            Point cursorLocation=this.PointToClient(new Point(e.X,e.Y));

            System.Windows.Forms.DataGridView.HitTestInfo hittest= dataGridView1.HitTest(cursorLocation.X,cursorLocation.Y);
            if (hittest.ColumnIndex != -1
                && hittest.RowIndex != -1)
                dataGridView1[hittest.ColumnIndex, hittest.RowIndex].Value = cellvalue;
        }

        private void dataGridView1_DragOver(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Copy;
        }
    }

祝你好运

good luck

这篇关于如何在Datagridview中应用拖放单元格内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！