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問題描述
限時送ChatGPT賬號..
誰能幫助我我有一個問題我試圖通過線程池讓這段代碼在后臺工作,但我似乎無法讓它工作我一直收到這個錯誤:
Could anyone help me i have a problem I'm trying to get this code to work in the background via threadpool but i cannot seem to get it to work i keep getting this error:
Cross-thread operation not valid: Control 'ListBox3' accessed
from a thread other than the thread it was created on.
這是我正在使用的代碼:
Here is the code i am using:
private void DoWork(object o)
{
var list = ListBox3;
var request = createRequest(TxtServer.Text, WebRequestMethods.Ftp.ListDirectory);
using (var response = (FtpWebResponse)request.GetResponse())
{
using (var stream = response.GetResponseStream())
{
using (var reader = new StreamReader(stream, true))
{
while (!reader.EndOfStream)
{
list.Items.Add(reader.ReadLine());
ResultLabel.Text = "Connected";
}
}
}
}
}
推薦答案
您需要調用委托來更新列表.請參閱此 MSDN 示例.
You need to invoke a delegate to update the list. See this MSDN example.
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