DataGridView的单元格控制只能输入数字

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;             }         }