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POc# asp.net gridview not sorting
 

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  1. POc# asp.net gridview not sorting
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    <pre><code>using System; using System.Collections.Generic; using System.Collections.Specialized; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data; using System.Configuration; using BiscomFax; namespace FaxServer { public partial class _Default : System.Web.UI.Page { public const string vsColumn = "Column"; public const string vsSortDirection = "SortDirection"; protected void Page_Load(object sender, EventArgs e) { if(!IsPostBack) ViewState[vsColumn] = ""; List_Click(ActivityButton, e); } protected void List_Click(object sender, EventArgs e) { //using (new Impersonator("administrator", "mlabs.com", "100%secure*")) //{ try { Fax fax = new Fax(); ConnObj cnObj = GetConfiguration(); Button btn = (Button)sender; string sort = ""; DataTable dt = new DataTable(); switch (btn.CommandName) { case "Activity": sort = "DateTime"; dt = fax.GetActivityLog(cnObj.faxDir, cnObj.faxUsername, cnObj.faxPassword); break; case "Message": sort = "DateTime"; dt = fax.GetMessageStatus(cnObj.faxDir, cnObj.faxUsername, cnObj.faxPassword); break; case "Pending": sort = "DeliveryTime"; dt = fax.GetPendingList(cnObj.faxDir, cnObj.faxUsername, cnObj.faxPassword); break; default: sort = "DateTime"; dt = fax.GetActivityLog(cnObj.faxDir, cnObj.faxUsername, cnObj.faxPassword); break; } GridView1.DataSource = dt; GridView1.Sort(sort, SortDirection.Descending); GridView1.DataBind(); } catch (Exception ex) { throw ex; } //} } protected void gridView_Sorting(object sender, GridViewSortEventArgs e) { DataTable dt = GridView1.DataSource as DataTable; if (dt != null) { DataView dv = new DataView(dt); string oldSort = ViewState[vsColumn].ToString(); dv.Sort = e.SortExpression + " " + convertSorDirectionToSql(e.SortDirection); if (dv.Sort == oldSort) dv.Sort = e.SortExpression + " " + convertSorDirectionToSql(SortDirection.Descending); ViewState[vsColumn] = dv.Sort; GridView1.DataSource = dv; GridView1.DataBind(); } } </code></pre> <p>i am having a very difficult time sorting the contents of this gridview, i know that i am binding correctly becuase the data is showing but the data does not get sorted at all by DateTime. what am i doing wrongly?</p>
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. COWhen I have done sorting like this before I have not been able to utilize the gridview's datasource property across postbacks. I have had to get the data from the underlying datasource again. Have you tried assigning 'dt' to a fresh copy of the data set?
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    2. COThe only way we could tell for sure what the problem is, you would need to post the aspx content for the grid view -- esp. the template for the date column.
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    3. CO@hogan anything else?
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