复选框列表项中的问题...

本文介绍了复选框列表项中的问题...的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

for (int i = 0; i < dt.Rows.Count; i++) { foreach(CheckBox chk in Chklst.Items) { if (chk.Text.IndexOf(dt.Rows[0][0].ToString()) > 0) { chk.Checked = true; } else { chk.Checked = false; } } }

我在这里遇到问题 我在这4个列表项中都有核对清单. 我正在用db签入，如果值已经在db中，则会被检查，否则未选中.. 在这里，我带了临时的脸颊盒chk.如何将温度复选框与cheklistbox进行比较 我在这里遇到的错误是 无法将类型为"System.Web.UI.WebControls.ListItem"的对象转换为类型为"System.Web.UI.WebControls.CheckBox"的对象. 怎么做???? plz帮助我

i am getting problem here i have checkboxlist in this 4 list items. i am checkin with db if value is already in db it get checked else unchecked.. here i took temp cheeck box chk. how to compare temp checkBox with cheklistbox the error what i am gettin here is Unable to cast object of type ''System.Web.UI.WebControls.ListItem'' to type ''System.Web.UI.WebControls.CheckBox''. how to do ????plz help me

推荐答案

我认为在这里，我们检查检查清单项目的索引(而不是验证存储在表中的值) 只需将检查表的值与数据表中的值进行比较 I think here ur checking for the indexof the checklistitem(instead of verifying the value which is stored in a table) just compare the value of the checklist and the value in the datatable

您会在for循环的变量"i"中生成一组整数索引，但您永远不会使用变量"'我在循环中. 如果(chk.Text.IndexOf(dt.Rows [0] [0] .ToString())> 0)" IndexOf返回一个整数...然后将该整数转换为字符串，然后将其与整数进行比较...应该会在此处产生编译错误. You generate a set of integer indexes in the variable ''i in the outer for loop, but you never use the variable ''i in the loop. "if (chk.Text.IndexOf(dt.Rows[0][0].ToString()) > 0)" IndexOf returns an integer ... then you convert that integer to a string, and then you compare it to an integer ... that should give you a compile error right there.