[英]how to use background worker class for stored procedure execution in c#
I have the below code in C# where i'm trying to use the background worker class to display the progress of execution of a stored procedure. 我在C#中有以下代码,其中我正在尝试使用后台工作程序类显示存储过程的执行进度。
Or(any input how to display the message of progress while stored procedure execution via c# is much appreciated) 或(非常感谢通过c#执行存储过程执行时如何显示进度消息的任何输入)
Problem is when i click the button there is no progress of execution in the code dont know where the issue occurs. 问题是,当我单击按钮时,代码中没有执行进度,不知道问题出在哪里。 Let me know if anyone has some ideas.
让我知道是否有人有想法。
Thanks 谢谢
//Butoon click code
private void button_executeBL_Click(object sender, EventArgs e)
{
if (!backgroundWorker1.IsBusy)
{
backgroundWorker1.RunWorkerAsync();
}
else
{
label1.Text = "Busy Processing, Please wait";
}
}
//background worker class process...
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
Thread.Sleep(200);
int count =1;
string connectionString = "Data Source=.;Initial Catalog=VegetablesCoSD;Integrated Security=True";
string commandText = "CoSD.BusinessLogic";
using (SqlConnection conn = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand(commandText, conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandTimeout = 600;
try
{
conn.Open();
//count will be the number of rows updated. will be zero if no rows updated.
backgroundWorker1.ReportProgress( count = cmd.ExecuteNonQuery());
if (backgroundWorker1.CancellationPending)
{
e.Cancel = true;
backgroundWorker1.ReportProgress(0);
return;
}
e.Result = count;
}
catch (SqlException ex)
{
MessageBox.Show("Update Failed coz.. " + ex.Message);
}
finally
{
conn.Close();
}
}
}
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
label1.Text = e.ProgressPercentage.ToString();
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Cancelled)
{
label1.Text = "Process Cancelled";
}
else if (e.Error != null)
{
label1.Text = e.Error.Message;
}
else
{
MessageBox.Show("Business Rules Executed Successfully!!!");
label1.Text = "Total Records Inserted" + e.Result.ToString();
}
}
private void button_Cancel(object sender, EventArgs e)
{
if (backgroundWorker1.IsBusy)
{
backgroundWorker1.CancelAsync();
}
else
{
label1.Text = " No Operation in progress to cancel";
}
}
Since you want to run an async task you should change your button click method to async void so you can await your backgroundWorker1.RunWorkerAsync(); 由于要运行异步任务,因此应将按钮的click方法更改为avoid void,以便您可以等待backgroundWorker1.RunWorkerAsync();。
Async methods not being awaited will always run synchronously. 未等待的异步方法将始终同步运行。 Always await async methods to run them asynchronously.
始终等待异步方法以异步方式运行它们。
private async void button_executeBL_Click(object sender, EventArgs e)
{
if (!backgroundWorker1.IsBusy)
{
await backgroundWorker1.RunWorkerAsync();
}
else
{
label1.Text = "Busy Processing, Please wait";
}
}
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