http://www.cnblogs.com/zwaleaf/archive/2009/05/22/1487214.html
Google了一下,
原來這個問題很多人碰到過,也有一些解決方案.不過感覺大多不好,有些許的問題.也許有好的,我沒找到吧.於是在前人基礎上,小小的改動了下.
目前還有兩個小問題待解決:
1)
DataGridView最後一行,第一列的ComboBox輸入值,DataGridView應該自動增加一行(編輯其他列會自動增加一行).
2)
第一列的ComboBox中,假設其Items中有Shenzhen, 我輸入Shen,Cell中的Value將會時Shen.
當再次點擊ComboBox,顯示下拉Item時,Item中的Shenzhen會高亮顯示,ComboBox的Text會自動變成Shenzhen.
其實這也是ComboxBox的一個功能.可能有時不需要這個功能.
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
//此Form中有兩個控件,一個DataGridView(dataGridView1),一個ComboBox(comboBox1)
//DataGridView中有兩列(都是DataGridViewTextBoxColumn的),其中第一列實現類似ComboBox的功能
//第一列中只有正在編輯的Cell纔會顯示ComboBox,其他的不會顯示,這樣好看一點
namespace Test
{
public partial class Form1 : Form
{
private int comboBoxColumnIndex = 0; // DataGridView的首列
public Form1()
{
InitializeComponent();
InitComboBoxValues();
this.dataGridView1.Controls.Add(this.comboBox1);
this.dataGridView1.CellEnter += new DataGridViewCellEventHandler(dataGridView1_CellEnter);
this.dataGridView1.CellLeave+=new DataGridViewCellEventHandler(dataGridView1_CellLeave);
}
private void InitComboBoxValues()
{
this.comboBox1.Items.AddRange(new String[] { "Beijing", "Shanghai", "Guangzhou", "Wuhan", "Shenzhen" });
this.comboBox1.AutoCompleteMode = AutoCompleteMode.Suggest; //輸入提示
this.comboBox1.AutoCompleteSource = AutoCompleteSource.ListItems;
}
private void dataGridView1_CellEnter(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex == comboBoxColumnIndex)
{
//此處cell即CurrentCell
DataGridViewCell cell = this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
Rectangle rect = this.dataGridView1.GetCellDisplayRectangle(cell.ColumnIndex, cell.RowIndex, true);
this.comboBox1.Location = rect.Location;
this.comboBox1.Size = rect.Size;
comfirmComboBoxValue(this.comboBox1, (String)cell.Value);
this.comboBox1.Visible = true;
}
}
private void dataGridView1_CellLeave(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex == comboBoxColumnIndex)
{
//此處cell不爲CurrentCell
DataGridViewCell cell = this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
cell.Value = this.comboBox1.Text;
this.comboBox1.Visible = false;
}
}
private void comfirmComboBoxValue(ComboBox com, String cellValue)
{
com.SelectedIndex = -1;
if (cellValue == null)
{
com.Text = "";
return;
}
com.Text = cellValue;
foreach (Object item in com.Items)
{
if ((String)item == cellValue)
{
com.SelectedItem = item;
}
}
}
}
}