Hi all,
If you have been over to the ASP.net 2 beginner thread, you will have seen that I have been trying to make text flash in a gridview dependant on certain requirements.
Now i'm nearly there (i hope!). What I have done is in my c# code behind I have done the following:
Code:
if (status.Contains("Artwork"))
{
e.Row.BackColor = System.Drawing.Color.Green;
e.Row.ForeColor = System.Drawing.Color.White;
if (Difference < limit)
{
e.Row.Style["font-weight"] = "bold";
e.Row.Attributes.Add("flash", "true");
}
}
else if (status.Contains("Printing"))
{
e.Row.BackColor = System.Drawing.Color.Yellow;
e.Row.ForeColor = System.Drawing.Color.Black;
if (Difference < limit)
{
e.Row.Style["font-weight"] = "bold";
e.Row.Attributes.Add("flash", "true");
}
}
else if (status.Contains("Finishing"))
{
e.Row.BackColor = System.Drawing.Color.Red;
e.Row.ForeColor = System.Drawing.Color.White;
if (Difference < limit)
{
e.Row.Style["font-weight"] = "bold";
e.Row.Attributes.Add("flash", "true");
}
}
else if (status.Contains("Vutek"))
{
e.Row.BackColor = System.Drawing.Color.Blue;
e.Row.ForeColor = System.Drawing.Color.White;
if (Difference < limit)
{
e.Row.Style["font-weight"] = "bold";
e.Row.Attributes.Add("flash", "true");
}
}
else
{
e.Row.BackColor = System.Drawing.Color.Gray;
e.Row.ForeColor = System.Drawing.Color.White;
e.Row.Attributes.Add("flash", "true");
if (Difference < limit)
{
e.Row.Style["font-weight"] = "bold";
e.Row.Attributes.Add("flash", "true");
}
}//end else
The main bit to look at is the e.Row.Attributes bit. This attribute tells me if I need to make the text blink or not.
Now in my aspx page I have <body on load=startup();> which does the following
Code:
function startup(){
StartFlashing()
}
function StartFlashing(){
var rowArray=document.getElementsByTagName('tr');
for (i=0;i<rowArray.length;i++)
{
if (rowArray[i].getAttribute('flash')=='true')
{
changeColour(rowArray[i].id);
}
}
}
function changeColour(elementId) {
var interval = 1000;
var colour1 = "#ff0000";
var colour2 = "#000000";
if (document.getElementById) {
var element = document.getElementById(elementId);
element.style.color = (element.style.color == colour1) ? colour2 : colour1;
setTimeout("changeColour('" + elementId + "')", interval);
}
}
Now when I run this, I am getting the following error:
element has no properties
[Break on this error] element.style.color = (element.style.color == colour1) ? colour2 : colou...
Any thoughts why my element has null?
Making text blink in a gridview with Javascript.
