This is a migrated thread and some comments may be shown as answers.

How to handle a exception error in c#?

1 Answer 285 Views

Ajax

This is a migrated thread and some comments may be shown as answers.

Yoongu asked on 25 Mar 2015, 08:17 AM

Hi,

I use the "try...catch" in order to save the data to the server.
And I was exception handling in the "throw ex".

However, this doesn't display page when an error occurs.
So I have to debug to check the exception message.

In such a case, do I need to process How?

here my code.

aspx

<title></title>

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">

<script type="text/javascript">

function Update() {

var batchManager = grid2.get_batchEditingManager();

batchManager.saveChanges(grid2.get_masterTableView());

}

......

<body>

<form id="form" runat="server">

<div>

<telerik:RadAjaxPanel ID="RadAjaxPanel2" runat="server" Height="100%" Width="100%" HorizontalAlign="NotSet" OnAjaxRequest="RadAjaxPanel2_AjaxRequest">

<telerik:RadGrid ID="RadGrid2" runat="server" AutoGenerateColumns="False" Culture="ko-KR" GroupPanelPosition="Top" OnNeedDataSource="RadGrid2_NeedDataSource" OnBatchEditCommand="RadGrid2_BatchEditCommand" OnItemCreated="RadGrid2_ItemCreated" Height="445px" OnPreRender="RadGrid2_PreRender" AllowAutomaticUpdates="True" ShowFooter="True">

<ClientSettings AllowColumnsReorder="True" ReorderColumnsOnClient="True" AllowKeyboardNavigation="True">

<ClientEvents OnRowCreated="RowCreated" OnBatchEditCellValueChanged="RadGrid2_OnBatchEditCellValueChanged" />

<KeyboardNavigationSettings AllowSubmitOnEnter="True" CancelChangesKey="D1" />

<Scrolling AllowScroll="True" UseStaticHeaders="True" />

</ClientSettings>

<MasterTableView EditMode="Batch" BatchEditingSettings-EditType="Cell">

<Columns>

............

aspx.cs

....................

protected override void OnPreInit(EventArgs e)

{

baseScriptManager = new ScriptManager();

baseScriptManager.AsyncPostBackTimeout = 600;

Page.Items[typeof(ScriptManager)] = baseScriptManager;

base.OnPreInit(e);

}

protected override void OnPreLoad(EventArgs e)

{

Page.Items[typeof(ScriptManager)] = null;

baseScriptManager.AllowCustomErrorsRedirect = true;

baseScriptManager.AsyncPostBackError += this.baseScriptManager_AsyncPostBackError;

this.Form.Controls.Add(baseScriptManager);

base.OnPreLoad(e);

}

private void baseScriptManager_AsyncPostBackError(object sender, AsyncPostBackErrorEventArgs e)

{

baseScriptManager.AsyncPostBackErrorMessage = e.Exception.Message;

}

protected void RadGrid2_BatchEditCommand(object sender, GridBatchEditingEventArgs e)

{

................

using (DbConnection connection = db.CreateConnection())

{

connection.Open();

DbTransaction transaction = connection.BeginTransaction();

try

{

DbCommand dbCommand = null;

foreach (DBParameter DBParameter in parameters)

{

dbCommand = db.GetStoredProcCommand("uspw_test1");

dbCommand.CommandTimeout = commandTimeout;

if (DBParameter != null)

{

foreach (Parameter parameter in DBParameter.ListParameter)

db.AddInParameter(dbCommand, parameter.Name, parameter.DBType, parameter.Value);

}

result += db.ExecuteNonQuery(dbCommand, transaction);

}

// Commit the transaction

transaction.Commit();

}

catch (System.Exception ex)

{

// Rollback transaction

transaction.Rollback();

throw ex;

}

connection.Close();

return;

}

How to handle a exception error in c#?

1 Answer, 1 is accepted