C# DataGridView中实现类似ComboBox可编辑的下拉框

http://download.csdn.net/detail/lanweiqiang/4357932 

 private int comboBoxColumnIndex = 0// DataGridView的首列

        
public Form1()
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功        
{
            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()
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功        
{
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功            
this.comboBox1.Items.AddRange(new String[] "Beijing""Shanghai""Guangzhou""Wuhan""Shenzhen" });
            
this.comboBox1.AutoCompleteMode = AutoCompleteMode.Suggest; //输入提示
            this.comboBox1.AutoCompleteSource = AutoCompleteSource.ListItems;
        }


        
private void dataGridView1_CellEnter(object sender, DataGridViewCellEventArgs e)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功        
{
            
if (e.ColumnIndex == comboBoxColumnIndex)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功            
{
                
//此处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)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功        
{
            
if (e.ColumnIndex == comboBoxColumnIndex)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功            
{
                
//此处cell不为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)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功        
{
            com.SelectedIndex 
= -1;
            
if (cellValue == null)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功            
{
                com.Text 
= "";
                
return;
            }

            com.Text 
= cellValue;
            
foreach (Object item in com.Items)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功            
{
                
if ((String)item == cellValue)
C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功                
{
                    com.SelectedItem 
= item;
                }

            }

        }

 

附上效果更明显:

刚开始(Column13为效果列)

C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功

获得光标,点击文本框可获得里面的值

C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功
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C# <wbr>DataGridView中实现类似ComboBox可编辑的下拉框功

 

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