FileStream fsInfo = new FileStream("d:/试题.txt", FileMode.OpenOrCreate, FileAccess.Write);
            StreamWriter swInfo = new StreamWriter(fsInfo, Encoding.UTF8);
            swInfo.Flush();
            swInfo.BaseStream.Seek(0, SeekOrigin.Begin);
            foreach (DataGridViewRow row in this.dataGridView1.Rows)
            {
                string str = String.Empty;
                foreach (DataGridViewCell col in row.Cells)
                {
                    str += col.Value + "   ";

                }
                str += swInfo.NewLine;
                swInfo.Write(str);
以上代码是将dataGridView1中的全部内容写入TXT文档，我在dataGridView1中已经加入可供选择的按钮，请问如何把自己的选择内容写入TXT文档中，谢谢！！！

FileStream fsInfo = new FileStream("d:/试题.txt", FileMode.OpenOrCreate, FileAccess.Write);
            StreamWriter swInfo = new StreamWriter(fsInfo, Encoding.UTF8);
            swInfo.Flush();
            swInfo.BaseStream.Seek(0, SeekOrigin.Begin);
            foreach (DataGridViewRow row in this.dataGridView1.Rows)
            {
                string str = String.Empty;
               // 声明一个Checkbox实例,判断是否选中,如果选中,则把字段内容加到字符串后
               CheckBox cb=new CheckBox();
                cb=(CheckBox)row.FindControl("你的Check控件名称");
               if(cb.checked==true)
               {
                foreach (DataGridViewCell col in row.Cells)
                {
                    str += col.Value + "   ";

                }
                }
                str += swInfo.NewLine;
                swInfo.Write(str);

LZ给分吧

没有错误，就给分了，谢谢！！

[ 本帖最后由 guoke0531 于 2010-6-3 15:35 编辑 ]

cb=(CheckBox)row.FindControl(checkBox1);
错误    1    “System.Windows.Forms.DataGridViewRow”不包含“FindControl”的定义，并且找不到可接受类型为“System.Windows.Forms.DataGridViewRow”的第一个参数的扩展方法“FindControl”(是否缺少 using 指令或程序集引用?)   
应该添加什么？
 

好人卡好