Application Development Cloud

You can call a javascript function in the codebehind of a webforms project. Its important not to forget the semi-colon after the function name.

Page.ClientScript.RegisterStartupScript(this.GetType(), "Call My Javascript Function", "myJavaScriptFunction();", true);

Many times you have data in a format that needs to be parsed. One thing I have come across lately is needing to get a value from between parenthesis.

Data: Here is my description and it has a code.(1234)

I need to get the code of 1234 from the data.

string value = "Here is my description and it has a code.(1234)";
int startIndex = value.IndexOf('(');
int endIndex = value.IndexOf(')');
int length = endIndex - startIndex;
if (startIndex > -1 && endIndex > -1)
{
return value.Substring(startIndex + 1, length-1);
}
else   return "There are no parenthesis in the value.";

While devving an app on localhost, the email  scripts error out and you cant test what the message would have looked like. With this handy snippet, you can dump any email from your app into a local directory. Slap this into your dev web config file.

<mailSettings>

    <smtp deliveryMethod="SpecifiedPickupDirectory">

      <specifiedPickupDirectory pickupDirectoryLocation="C:\MailDump\" />

      <network host="localhost"/>

    </smtp>

  </mailSettings>

It can be handy to have each row have an ID for use with client side scripting. By default the asp gridview does not come with ids for the rows. Use the row databound event to add them

protected void GridViewFullView_RowDataBound(object sender, GridViewRowEventArgs e)
{
     if (e.Row.RowType == DataControlRowType.DataRow)
     {
         GridViewRow row = e.Row;
          row.Attributes["id"] = GridViewFullView.DataKeys[e.Row.RowIndex].Value.ToString();
     }
}

So you have dropdown lists, populated with data from your data storage solution.  You need to prepend the lists with messages such as “Please select an option”.

 public void addMessageToDropdown(DropDownList whatDropdown, string ddmessage)
 {
    DropDownList list = whatDropdown as DropDownList;
    if(list != null)
    {
      list.Items.Insert(0, ddmessage);
    }
 
 }

Need a dropdown list with some years in it and a custom message as the first choice? How about this to start with: current year through 6 years into the future. Add a dropdownlist control to the page and call this function on pageload.

public void addYearsToDropdown(DropDownList whatDropdown, string ddmessage)
 {
      DropDownList list = whatDropdown as DropDownList;
      if(list != null)
      {
          list.Items.Insert(0, ddmessage);
      }
      int curYear = System.DateTime.Now.Year - 1;
      for(int i = 1; i < 6; i++)
      {
          list.Items.Insert(i, (curYear + i).ToString());
       }
 }

addMessageToDropdown(DropDownListYears, “–Select A Year–“);