Server Error in '/' Application.

Input string was not in a correct format.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error:


Line 137:            DropDownday.SelectedValue = Txtfirstday.Text
Line 138:            DropDownmon.SelectedValue = Txtfirstmon.Text
Line 139:            Dim yearind As Integer = Txtseason.Text
Line 140:            Dim yearstr As String
Line 141:            yearind = yearind - 1

Source File: E:\web\jacksce1\winter\winputweeks.aspx    Line: 139

Stack Trace:


[FormatException: Input string was not in a correct format.]
   Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat) +224
   Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +92

[InvalidCastException: Conversion from string "" to type 'Integer' is not valid.]
   Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +248
   ASP.winter_winputweeks_aspx.loadleaguedates() in E:\web\jacksce1\winter\winputweeks.aspx:139
   ASP.winter_winputweeks_aspx.loadseason(Object sender, GridViewRowEventArgs e) in E:\web\jacksce1\winter\winputweeks.aspx:201
   System.Web.UI.WebControls.GridView.OnRowDataBound(GridViewRowEventArgs e) +116
   System.Web.UI.WebControls.GridView.CreateRow(Int32 rowIndex, Int32 dataSourceIndex, DataControlRowType rowType, DataControlRowState rowState, Boolean dataBind, Object dataItem, DataControlField[] fields, TableRowCollection rows, PagedDataSource pagedDataSource) +184
   System.Web.UI.WebControls.GridView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) +3839
   System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) +67
   System.Web.UI.WebControls.GridView.PerformDataBinding(IEnumerable data) +15
   System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +133
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +34
   System.Web.UI.WebControls.DataBoundControl.PerformSelect() +151
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +76
   System.Web.UI.WebControls.GridView.DataBind() +10
   System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +114
   System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +76
   System.Web.UI.Control.EnsureChildControls() +97
   System.Web.UI.Control.PreRenderRecursiveInternal() +42
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +906


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0