1，先上图
代码如下。
View Code 1 private AutoCompleteStringCollection autoCompleteSource = new AutoCompleteStringCollection(); 2 3 private void dataGridView1_EditingControlShowing( object sender, DataGridViewEditingControlShowingEventArgs e) 4 { 5 DataGridView dgv = (DataGridView)sender; 6 if (e.Control is TextBox) 7 { 8 TextBox tb = (TextBox)e.Control; 9 if (dgv.CurrentCell.OwningColumn.Name == " Name " ) 10 { 11 tb.AutoCompleteMode = AutoCompleteMode.SuggestAppend; 12 tb.AutoCompleteSource = AutoCompleteSource.CustomSource; 13 tb.AutoCompleteCustomSource = this .autoCompleteSource; 14 } 15 else 16 { 17 tb.AutoCompleteMode = AutoCompleteMode.None; 18 } 19 } 20 } 21 22 private void dataGridView1_DataSourceChanged( object sender, EventArgs e) 23 { 24 var dgv = (DataGridView)sender; 25 this .autoCompleteSource.Clear(); 26 foreach (DataGridViewRow r in dgv.Rows) 27 { 28 string val = r.Cells[ " Name " ].Value as string ; 29 if ( ! string .IsNullOrEmpty(val) && ! this .autoCompleteSource.Contains(val)) 30 { 31 autoCompleteSource.Add(val); 32 } 33 } 34 } 35 36 private void dataGridView1_CellValidating( object sender, DataGridViewCellValidatingEventArgs e) 37 { 38 39 } 40 // 添加新的成员 41 private void dataGridView1_CellValueChanged( object sender, DataGridViewCellEventArgs e) 42 { 43 int i = 0 ; 44 if (e.RowIndex == - 1 ) 45 { 46 i = 0 ; 47 } 48 else 49 { 50 i = e.RowIndex; 51 } 52 var dgv = (DataGridView)sender; 53 if (dgv.Columns[e.ColumnIndex].Name == " Name " ) 54 { 55 string val = dgv[e.ColumnIndex, i].Value as string ; 56 if ( ! string .IsNullOrEmpty(val) && ! this .autoCompleteSource.Contains(val)) 57 { 58 autoCompleteSource.Add(val); 59 } 60 } 61 }
通过以上几个步骤就可以完成自动完成的实现了。