Can Somebody tell me what this error means? vb.net?

An Exception has occurred:


URL = /SBS/BuildingSearch.aspx


QueryString =


Error Details





System.InvalidCastException: Cast from string "ViewBuildingInfo.aspx?bId=" to type 'Double' is not valid. ---%26gt; System.FormatException: Input string was not in a correct format.


at Microsoft.VisualBasic.CompilerServices.D... Value, NumberFormatInfo NumberFormat)


at Microsoft.VisualBasic.CompilerServices.D... Value, NumberFormatInfo NumberFormat)


--- End of inner exception stack trace ---


at Microsoft.VisualBasic.CompilerServices.D... Value, NumberFormatInfo NumberFormat)


at Microsoft.VisualBasic.CompilerServices.O... conv1, TypeCode tc1, IConvertible conv2, TypeCode tc2)


at Microsoft.VisualBasic.CompilerServices.O... o1, Object o2)


at ASP.BuildingSearch_aspx.__DataBind__cont... sender, EventArgs e) in c:\inetpub\wwwroot\SBS\BuildingSearch.as... 42


at System.Web.UI.Control.OnDataBinding(Even... e)


at System.Web.UI.Control.DataBind()


at System.Web.UI.Control.DataBind()


at System.Web.UI.Control.DataBind()


at System.Web.UI.WebControls.DataGrid.Creat... itemIndex, Int32 dataSourceIndex, ListItemType itemType, Boolean dataBind, Object dataItem, DataGridColumn[] columns, TableRowCollection rows, PagedDataSource pagedDataSource)


at System.Web.UI.WebControls.DataGrid.Creat... useDataSource)


at System.Web.UI.WebControls.BaseDataList.O... e)


at System.Web.UI.WebControls.BaseDataList.D...


at SBS.BuildingSearch.GridDetail() in c:\inetpub\wwwroot\SBS\BuildingSearch.as... 224


at SBS.BuildingSearch.btnAllBld_Click(Objec... sender, EventArgs e) in c:\inetpub\wwwroot\SBS\BuildingSearch.as... 135


at System.Web.UI.WebControls.Button.OnClick... e)


at System.Web.UI.WebControls.Button.System.... eventArgument)


at System.Web.UI.Page.RaisePostBackEvent(IP... sourceControl, String eventArgument)


at System.Web.UI.Page.RaisePostBackEvent(Na... postData)


at System.Web.UI.Page.ProcessRequestMain()

Can Somebody tell me what this error means? vb.net?
You are trying to set this string "ViewBuildingInfo.aspx?bId=" to a double variable.
Reply:Probably you are passing double value to a string