主要是应用DataGridView的EditingControlShowing事件。当单元格进入编辑模式时，可以处理执行该编辑控件的自定义初始化的此事件。
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public
DataGridViewTextBoxEditingControl dgvTxt = null; // 声明 一个 CellEdit private
void
dgv2_EditingControlShowing(object
sender, DataGridViewEditingControlShowingEventArgs e) { dgvTxt = (DataGridViewTextBoxEditingControl)e.Control; // 赋值 dgvTxt.SelectAll(); dgvTxt.KeyPress += Cells_KeyPress; // 绑定到事件 } // 自定义事件KeyPress事件 private
void
Cells_KeyPress(object
sender, KeyPressEventArgs e) { Kzjgsl.keyPressXS(e, dgvTxt); } |
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public
static
void
keyPressXS(KeyPressEventArgs e, DataGridViewTextBoxEditingControl dgvTxt) { if
(char.IsNumber(e.KeyChar) || e.KeyChar == ‘.‘
|| e.KeyChar == (char)Keys.Back) { e.Handled = false; //让操作生效 int
j = 0; int
k = 0; bool
flag = false; if
(dgvTxt.Text.Length == 0) { if
(e.KeyChar == ‘.‘) { e.Handled = true; //让操作失效 } } for
(int
i = 0; i < dgvTxt.Text.Length; i++) { if
(dgvTxt.Text[i] == ‘.‘) { j++; flag = true; } if
(flag) { if
(char.IsNumber(dgvTxt.Text[i]) && e.KeyChar != (char)Keys.Back) { k++; } } if
(j >= 1) { if
(e.KeyChar == ‘.‘) { e.Handled = true; //让操作失效 } } if
(k == 2) { if
(char.IsNumber(dgvTxt.Text[i]) && e.KeyChar != (char)Keys.Back) { if
(dgvTxt.Text.Length - dgvTxt.SelectionStart < 3) { if
(dgvTxt.SelectedText != dgvTxt.Text) { e.Handled = true; ////让操作失效 } } } } } } else { e.Handled = true; } } |
原文：http://www.cnblogs.com/colder/p/3517798.html