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POThe calling thread cannot access this object because a different thread owns it
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  1. POThe calling thread cannot access this object because a different thread owns it
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    copied!<p>My code is as below </p> <pre><code>public CountryStandards() { InitializeComponent(); try { FillPageControls(); } catch (Exception ex) { MessageBox.Show(ex.Message, "Country Standards", MessageBoxButton.OK, MessageBoxImage.Error); } } /// &lt;summary&gt; /// Fills the page controls. /// &lt;/summary&gt; private void FillPageControls() { popUpProgressBar.IsOpen = true; lblProgress.Content = "Loading. Please wait..."; progress.IsIndeterminate = true; worker = new BackgroundWorker(); worker.DoWork += new System.ComponentModel.DoWorkEventHandler(worker_DoWork); worker.ProgressChanged += new System.ComponentModel.ProgressChangedEventHandler(worker_ProgressChanged); worker.WorkerReportsProgress = true; worker.WorkerSupportsCancellation = true; worker.RunWorkerCompleted += new System.ComponentModel.RunWorkerCompletedEventHandler(worker_RunWorkerCompleted); worker.RunWorkerAsync(); } private void worker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e) { GetGridData(null, 0); // filling grid } private void worker_ProgressChanged(object sender, System.ComponentModel.ProgressChangedEventArgs e) { progress.Value = e.ProgressPercentage; } private void worker_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e) { worker = null; popUpProgressBar.IsOpen = false; //filling Region dropdown Standards.UDMCountryStandards objUDMCountryStandards = new Standards.UDMCountryStandards(); objUDMCountryStandards.Operation = "SELECT_REGION"; DataSet dsRegionStandards = objStandardsBusinessLayer.GetCountryStandards(objUDMCountryStandards); if (!StandardsDefault.IsNullOrEmptyDataTable(dsRegionStandards, 0)) StandardsDefault.FillComboBox(cmbRegion, dsRegionStandards.Tables[0], "Region", "RegionId"); //filling Currency dropdown objUDMCountryStandards = new Standards.UDMCountryStandards(); objUDMCountryStandards.Operation = "SELECT_CURRENCY"; DataSet dsCurrencyStandards = objStandardsBusinessLayer.GetCountryStandards(objUDMCountryStandards); if (!StandardsDefault.IsNullOrEmptyDataTable(dsCurrencyStandards, 0)) StandardsDefault.FillComboBox(cmbCurrency, dsCurrencyStandards.Tables[0], "CurrencyName", "CurrencyId"); if (Users.UserRole != "Admin") btnSave.IsEnabled = false; } /// &lt;summary&gt; /// Gets the grid data. /// &lt;/summary&gt; /// &lt;param name="sender"&gt;The sender.&lt;/param&gt; /// &lt;param name="pageIndex"&gt;Index of the page.( used in case of paging) &lt;/pamam&gt; private void GetGridData(object sender, int pageIndex) { Standards.UDMCountryStandards objUDMCountryStandards = new Standards.UDMCountryStandards(); objUDMCountryStandards.Operation = "SELECT"; objUDMCountryStandards.Country = txtSearchCountry.Text.Trim() != string.Empty ? txtSearchCountry.Text : null; DataSet dsCountryStandards = objStandardsBusinessLayer.GetCountryStandards(objUDMCountryStandards); if (!StandardsDefault.IsNullOrEmptyDataTable(dsCountryStandards, 0) &amp;&amp; (chkbxMarketsSearch.IsChecked == true || chkbxBudgetsSearch.IsChecked == true || chkbxProgramsSearch.IsChecked == true)) { DataTable objDataTable = StandardsDefault.FilterDatatableForModules(dsCountryStandards.Tables[0], "Country", chkbxMarketsSearch, chkbxBudgetsSearch, chkbxProgramsSearch); dgCountryList.ItemsSource = objDataTable.DefaultView; } else { MessageBox.Show("No Records Found", "Country Standards", MessageBoxButton.OK, MessageBoxImage.Information); btnClear_Click(null, null); } } </code></pre> <p>The step <code>objUDMCountryStandards.Country = txtSearchCountry.Text.Trim() != string.Empty ? txtSearchCountry.Text : null;</code> in get grid data throws exception </p> <blockquote> <p>The calling thread cannot access this object because a different thread owns it.</p> </blockquote> <p>What's wrong here?</p>
 

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