[英]Get unchecked values from CheckBoxList in c#
I am trying to update the unchecked values from CheckBoxList
in button_click. 我正在尝试从button_click中的CheckBoxList
更新未检查的值。 and not able to get the values of CheckBoxList
unchecked items. 并且无法获取CheckBoxList
未选中项的值。
my code for populate chechboxlist is 我用于填充chechboxlist的代码是
using (SqlConnection conn = new SqlConnection())
{
conn.ConnectionString = ConfigurationManager
.ConnectionStrings["constr"].ConnectionString;
using (SqlCommand cmd = new SqlCommand())
{
cmd.CommandText = "select * from hobbies";
cmd.Connection = conn;
conn.Open();
using (SqlDataReader sdr = cmd.ExecuteReader())
{
while (sdr.Read())
{
ListItem item = new ListItem();
item.Text = sdr["Hobby"].ToString();
item.Value = sdr["HobbyId"].ToString();
item.Selected = Convert.ToBoolean(sdr["IsSelected"]);
chkHobbies.Items.Add(item);
}
}
conn.Close();
}
}
i am using the answer https://stackoverflow.com/a/410505/2376607 我正在使用答案https://stackoverflow.com/a/410505/2376607
but it is for windows forms 但这是针对Windows窗体的
please help how to get the unchecked values of CheckBoxList
. 请帮助如何获取CheckBoxList
的未经检查的值。
You can try below sample of code :- 您可以尝试以下代码示例:-
string chkboxlistValue = "";
string uncheckedId = "";
foreach (ListItem val in chkbxId.Items)
{
if (val.Selected)
{
chkboxlistValue += val.Value + " ";
}
else
{
uncheckedId += val.Value + ",";
}
}
foreach (ListItem item in chkHobbies.Items)
{
if (item.Selected == false)
{
// your code here
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.