DotNet Blogs

Use Popupcontrolextender as dropdownlist

Sujit Kumar — Mon, 18 May 2009 09:29:21 +0000

You can also use ListBox as popup

how to hide url in status bar

Sujit Kumar — Fri, 15 May 2009 10:47:12 +0000

http://www.websitename.com/?parm=12” onMouseOver=”window.status=’http://www.websitename.com’;return true” onMouseOut=”window.status=””>Click here

http://www.websitename.com” onclick=”returnredirect(‘http://www.websitename.com/?parm=12′);”>Click here

Hide Context menu of Browser

Sujit Kumar — Fri, 15 May 2009 10:44:04 +0000

using oncontextmenu event of body, you can hide context menu of any Browser:

ex:

oncontextmenu =”return false;”>

disable the default button on a webform

Sujit Kumar — Wed, 18 Mar 2009 12:12:44 +0000

you can disable default button on a webform set to false of button property “UseSubmitBehavior” .

ex:

<asp:Button ID=”btnSave” runat=”server” Text=”Save” CssClass=”buttons” UseSubmitBehavior=”false” />

Download SQL Server 2008 Express with Tools, Including Management Studio

Sujit Kumar — Tue, 20 Jan 2009 06:51:39 +0000

you can download sql server 2008 express with management studio express editions

link:

http://www.microsoft.com/downloads/details.aspx?FamilyID=7522a683-4cb2-454e-b908-e805e9bd4e28&DisplayLang=en#filelist

Organize “Using” in Visual Studio 2008

Sujit Kumar — Wed, 31 Dec 2008 10:57:56 +0000

Keep the value of Password textboxes after postback

Sujit Kumar — Wed, 31 Dec 2008 10:42:24 +0000

keep the value of password textbox after postback while textbox TextMode properties is “Password”

add this line on page_load event

txtPassword.Attributes.Add(“value”,txtPassword.Text);

It will keep text of password textbox while page will go for postback on server.

A potentially dangerous Request.Form value

Sujit Kumar — Fri, 14 Nov 2008 11:12:28 +0000

This error occurs when we try to post html code from code behind.
The reason behind it server always validate the posted data, if it find that its an HTML code, error will occues like ‘A potentially dangerous Request.Form value…’.

if you want to send html data then you hvae to write {validateRequest=”false”} in page directive
ex:

AutoEventWireup=”true” ValidateRequest=”false”

pass multiple query string using HyperLinkField in Gridview

Sujit Kumar — Sat, 01 Nov 2008 11:36:05 +0000

You can pass single/multiple query string using HyperLInkField

Pass data field name in DataNavigateUrlFields which you wnat to pass value in query string
ex:

DataNavigateUrlFields=”subject,query”

here subject and query both are differenct data field those are comming from database.

and write the page name in DataNavigateUrlFormatString where you want to pass query string value.

ex:

DataNavigateUrlFormatString = “~/Pages/default.aspx?UserName={0}&GameTitle={1}”

asp:HyperLinkField HeaderText=”View Details” DataNavigateUrlFields=”subject,query” DataNavigateUrlFormatString = “~/Pages/default.aspx?UserName={0}&GameTitle={1}” Text=”View”

Show Image from SQL Server in ASP.NET Using C#

Sujit Kumar — Fri, 03 Oct 2008 09:37:40 +0000

Show Image from SQL Server in ASP.NET Using C#

SqlConnection objConnection;
SqlCommand objCommand;
SqlDataAdapter objAdapter;
DataSet objDS=new DataSet();

using (objConnection = new SqlConnection(“server=sujitkumar\\sqlexpress;database=livechat;uid=sa;pwd=1234″))
{
objConnection.Open();
using (objCommand = new SqlCommand())
{
objCommand.Connection = objConnection;

objCommand.CommandType = CommandType.Text;
objCommand.CommandText = “select img_online from image_master”;

objAdapter = new SqlDataAdapter(objCommand);
objAdapter.Fill(objDS, “CustomerAttributes”);
}
objConnection.Close();
}

MemoryStream stream = new MemoryStream();
byte[] image = (byte[])objDS.Tables[0].Rows[0][0];
Response.ContentType = “image/jpeg”;
Response.Expires = 0; Response.Buffer =true;
Response.Clear();
Response.BinaryWrite(image);
Response.End();

The above code will write image on the page.

You can show this image in any image button or image control like: