输入法全角自动转半角的技术处理

Posted 2022-08-19 jwsoft007

/// <summary>
        /// 全角转半角
        /// </summary>
        /// <param name="input">待处理字符串</param>
        /// <returns>半角字符串</returns>
        public static string ToDBC(string input)
        
            char[] c = input.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            
                //全角空格为12288
                if (c[i] == 12288)
                
                    //半角空格为32
                    c[i] = (char)32;
                    continue;
                
                //半角(33-126)与全角(65281-65374)的对应关系是：相差65248
                if (c[i] > 65280 && c[i] < 65375)
                    c[i] = (char)(c[i] - 65248);
            
            return new string(c);
        

 

textbox: Leave事件中添加,光标离开控件后修改textbox的内容

if (textBox1.Text == "") return;

textBox1.Text = ToDBC(textBox1.Text);

 

dataGridView: CellEndEdit事件中添加, 光标离开单元格后修改Cell的内容

if (dataGridView1.CurrentCell.Value == null) return;

dataGridView1.CurrentCell.Value = ToDBC(dataGridView1.CurrentCell.Value.ToString());

 

dev gridview: CellValueChanged事件中添加, 光标离开单元格后修改Cell的内容

if (e.Value == null) return;

var row = gridView1.GetDataRow(e.RowHandle);

row[e.Column.ColumnHandle] = ToDBC(e.Value.ToString());