Open a New Window On Server Side using Javascript Code in Asp.net

// open new window with specified path

function OpenWindow(url)

{
   newwindow = window.open(url, 'mywindow', 'width=500,height=400'); 

}

Now In .aspx.cs page or server side to use the javascript window open you have to use the following code

StringBuilder popupScript = new StringBuilder();
popupScript.Append("");
// if you are using script manager - update panel then this
ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "PopupScript", popupScript.ToString(), false);
//else
Page.RegisterStartupScript("PopupScript", popupScript.ToString());

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Add "Select" Option To Dropdown list in Asp.net

There are many ways to add select option to dropdown list.. Here in this post i will list some of the ways: 1) Select 2) ddltemp.Items.Add(new ListItem(”Select”, “0")); 3) ddltemp.Items.Insert(0, new ListItem(”Select”, “0")); 4) ddltemp.Items.Insert(0, "--Select--"); ddltemp.Items[0].Value = "0";

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Tutorial using MySQL with Asp.Net

If you want to use MySQL Database with Asp.net, then here is a link which explains: http://www.15seconds.com/issue/050407.htm

• Download of MySQL Server
• MySQL Administrator
• MySQL Query Browser
• .Net Connector (For Asp.net Integration)

The above link has explained in detail, with proper screenshots, from where to download installers, how to install with step by step screens and explanations, and also how to create sample asp.net application with MySQL database, create MySQL database (schema), create MySQL Table, Insert Data, and populate that data in asp.net gridview.

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Using String.Format("{0}", "formatting string"}; in Asp.net

Many times we want to define formats for date, currency, number etc

For example if we want date in

" 09 September 2009"  - String.Format{0:D}

" 09 September 2009 12:30"  - String.Format{0:f}

Like this various formats for date, month, year, time, currency number etc can be seen at :

http://bit.ly/cctp

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Inserting Data Into Table Using Select Query

In SQL, sometimes we need to select some data from one table and insert data into another table, this can be done as follows with a simple sql query:

Insert into Table1 (c1, c2, c3, c4, c5)
(Select c1, c2, c3, c4, c5 from Table2)
But make sure that both the tables have same fields, data type..

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Textbox Watermark using Ajaxtoolkit or By Javascript

Adding Watermark to textbox can be done in two ways:

1) Using Ajax Toolkit:

<asp:TextBox runat="server" id="txtname"/>

<ajaxToolkit:TextBoxWatermarkExtender ID="TBWE2" runat="server"
   TargetControlID="TextBox1"
   WatermarkText="Type First Name Here"
   WatermarkCssClass="watermarked" />

For more information on Ajax Toolkit please visit:
http://www.asp.net/ajax/

2) Using Javascript:

<asp:TextBox ID=”txtname” runat=”server” Text = “Please Enter your Name here”
onblur = “TextboxWaterMark(this, event);”
onfocus = “TextboxWaterMark(this, event);”>
</asp:TextBox>

<script type = “text/javascript”>
var Text = “Please Enter your text here”;//black

function TextboxWaterMark(txtid, evnt)
{
if(txtid.value.length == 0 && evnt.type == “blur”)
{
txtid.style.color = “set the color you want”;//red
txtid.value = Text;
}
if(txtid.value == Text && evnt.type == “focus”)
{
txtid.style.color = “set the color you want”;
txtid.value=”";
}
}
</script>

To use in code behind :

txtname.Attributes.Add(”onblur”, “TextboxWaterMark(this, event);”);

txtname.Attributes.Add(”onfocus”, “TextboxWaterMark(this, event);”);

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Disable button after submit in Asp.net

Once the user has filled the form details, or did any kind of changes and clicked on submit button, if we want to prevent the duplicate data entry and show other message like "please wait.."'then we can do this as below:

<asp:Button  runat="server" ID="btnsubmit" Text="Submit"
OnClick="btnsubmit_Click" UseSubmitBehavior="false"
OnClientClick="this.disabled=true;this.value='Please wait..';"   />

For <asp:imagebutton> usesubmitbehavior will not work hence for this:

<asp:ImageButton runat=”server” ID=”btImageButton”
ImageUrl=”/images/submit.jpeg” OnClick=”btImageButton_Click”
OnClientClick=”javascript: Submit(this);” />

<script type=”text/javascript” language=”javascript”>

function Submit(c){
Page_ClientValidate();
if (Page_IsValid){
c.disabled = true
__doPostBack(c.name, ”);
}
return Page_IsValid;
}

</script>

For furhter reference please visit msdn  :  http://bit.ly/1CpMBq

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