DataGridView中多个comboBox时的小问题

Question

本帖最后由 hejialin666 于 2009-12-21 14:41:19 编辑

Answer 1

    private void dgView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            ((ComboBox)e.Control).SelectedIndexChanged -= new EventHandler(ComboBox_SelectedIndexChanged);
            ((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
        }如果有就先去除

Answer 2

而且这里应该转换成DataGridViewComboBoxEditingControl合理

Answer 3

     //在添加到Grid前加上不行吗？：
Fparmrangedesc .SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged); 
            dataGridView1.Columns.Add(Fparmrangedesc);
            dataGridView1.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(dgView_EditingControlShowing);
        }        private void dgView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            ((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
        }        private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
           
           MessageBox.Show(((ComboBox)sender).Text);
             
        }     }
}
 

Answer 4

我想这个还是需要具体到哪一个cell绑定了SelectedIndexChanged 事件。
而((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged); 是将所有的comboBox都绑定一遍。现在的问题就是怎么让DataGridView中的某一个cell绑定事件，别的不绑？？？？？

Answer 5

这样是将一列都绑上这个事件了，当触发时，会从上到下没有个都触发一遍，不论你操作的是不是那一行的comboBox

Answer 6

更正上面回复：
这样是将一列都绑上这个事件了，当触发时，会从上到下每一个都触发一遍，不论你操作的是不是那一行的comboBox

Answer 7

我已经试了不知道多少次了
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace WindowsApplication248
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();            DataGridView DGV = new DataGridView();
            DGV.Parent = this;
            DGV.Dock = DockStyle.Fill;            DataGridViewComboBoxColumn Column1 = new DataGridViewComboBoxColumn();
            Column1.Items.Add("a");
            Column1.Items.Add("b");
            Column1.Items.Add("c");
            DGV.Columns.Add(Column1);            DataGridViewComboBoxColumn Column2 = new DataGridViewComboBoxColumn();
            Column2.Items.Add("a");
            Column2.Items.Add("b");
            Column2.Items.Add("c");
            DGV.Columns.Add(Column2);            DGV.Rows.Add(3);            DGV.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(DGV_EditingControlShowing);
        }        void DGV_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            ((DataGridViewComboBoxEditingControl)e.Control).SelectedIndexChanged -= new EventHandler(Form1_SelectedIndexChanged);
            ((DataGridViewComboBoxEditingControl)e.Control).SelectedIndexChanged += new EventHandler(Form1_SelectedIndexChanged);
        }        void Form1_SelectedIndexChanged(object sender, EventArgs e)
        {
            MessageBox.Show("!");
        }
    }
}