Reapeter Control and Array List

  • Thread starter Shawn H. Mesiatowsky
  • Start date
S

Shawn H. Mesiatowsky

I have an array list that I want to display to the browser. I need very
precise control of the repeater, so I have function for the OnItemDataBound
event for the repater, then in that function I have my code to alter the
displayed data. for instance, I need to display a button on the client side
with client side script. I cannot accomplish this using the Button web
control, so instead I use a label and in the text of the label I set it to
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";


Here is my code

private void Page_Load(object sender, System.EventArgs e)
{
ProjectProcess businessLogic = new ProjectProcess();
double SIDID = double.Parse(Request.Params["id"]);
ArrayList securityEntries;

securityEntries = businessLogic.listSecurityEntries(SIDID);
Repeater1.DataSource = securityEntries;
Repeater1.DataBind();
}

public void repeater1ItemDataBound(Object source,
System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
{
((HyperLink)e.Item.FindControl("lblUser")).Text =
(string)DataBinder.Eval(e.Item.DataItem,"UserName");
((HyperLink)e.Item.FindControl("lblUser")).NavigateUrl =
"Security.aspx?user=" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString();
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";

}

}
The client side code for the DeleteEntry function is as follows:

function DeleteMe(userid)
{
if(confirm("Are you sure you want to delete the record?"))
{
window.location="Security.aspx?command=delete&user=" + userid;
}
return;
}


Anywayz, I thought to myself, if I just create on label, and in the label,
change the text in code to display what I want instead of using a repeater
control all together. This would be much like using the old ASP model and
using the reponse.write method where I wanted to display the data. the only
difference here is that I cannot use the reponse.write function here because
I would be writing to the end of my reponse html code returned to the
client. I know there is a performance hit with calling the OnItemDataBound
event. Would the method I just described be less of a performance hit, or is
there another way of looking at this? Thanks
 
M

MattC

you can use the button control and use reflection to get the instance and
add the onclick attribute to it then. Something like

if(e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType ==
ListItemType.Item )
{
Button ib = (Button)e.Item.FindControl("DeleteButton");
ib.Attributes.Add("onclick","DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() + ")";
}


MattC


Shawn H. Mesiatowsky said:
I have an array list that I want to display to the browser. I need very
precise control of the repeater, so I have function for the OnItemDataBound
event for the repater, then in that function I have my code to alter the
displayed data. for instance, I need to display a button on the client side
with client side script. I cannot accomplish this using the Button web
control, so instead I use a label and in the text of the label I set it to
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";


Here is my code

private void Page_Load(object sender, System.EventArgs e)
{
ProjectProcess businessLogic = new ProjectProcess();
double SIDID = double.Parse(Request.Params["id"]);
ArrayList securityEntries;

securityEntries = businessLogic.listSecurityEntries(SIDID);
Repeater1.DataSource = securityEntries;
Repeater1.DataBind();
}

public void repeater1ItemDataBound(Object source,
System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
{
((HyperLink)e.Item.FindControl("lblUser")).Text =
(string)DataBinder.Eval(e.Item.DataItem,"UserName");
((HyperLink)e.Item.FindControl("lblUser")).NavigateUrl =
"Security.aspx?user=" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString();
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";

}

}
The client side code for the DeleteEntry function is as follows:

function DeleteMe(userid)
{
if(confirm("Are you sure you want to delete the record?"))
{
window.location="Security.aspx?command=delete&user=" + userid;
}
return;
}


Anywayz, I thought to myself, if I just create on label, and in the label,
change the text in code to display what I want instead of using a repeater
control all together. This would be much like using the old ASP model and
using the reponse.write method where I wanted to display the data. the
only difference here is that I cannot use the reponse.write function here
because I would be writing to the end of my reponse html code returned to
the client. I know there is a performance hit with calling the
OnItemDataBound event. Would the method I just described be less of a
performance hit, or is there another way of looking at this? Thanks
Click to expand...
 
S

Shawn H. Mesiatowsky

Tried that, but the output from the button control makes it type=submit so a
clientside script to use window.navigate('someurl.htm'); will not work

MattC said:
you can use the button control and use reflection to get the instance and
add the onclick attribute to it then. Something like

if(e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType ==
ListItemType.Item )
{
Button ib = (Button)e.Item.FindControl("DeleteButton");
ib.Attributes.Add("onclick","DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() + ")";
}


MattC


Shawn H. Mesiatowsky said:
I have an array list that I want to display to the browser. I need very
precise control of the repeater, so I have function for the
OnItemDataBound event for the repater, then in that function I have my
code to alter the displayed data. for instance, I need to display a button
on the client side with client side script. I cannot accomplish this using
the Button web control, so instead I use a label and in the text of the
label I set it to
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";


Here is my code

private void Page_Load(object sender, System.EventArgs e)
{
ProjectProcess businessLogic = new ProjectProcess();
double SIDID = double.Parse(Request.Params["id"]);
ArrayList securityEntries;

securityEntries = businessLogic.listSecurityEntries(SIDID);
Repeater1.DataSource = securityEntries;
Repeater1.DataBind();
}

public void repeater1ItemDataBound(Object source,
System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
{
((HyperLink)e.Item.FindControl("lblUser")).Text =
(string)DataBinder.Eval(e.Item.DataItem,"UserName");
((HyperLink)e.Item.FindControl("lblUser")).NavigateUrl =
"Security.aspx?user=" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString();
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";

}

}
The client side code for the DeleteEntry function is as follows:

function DeleteMe(userid)
{
if(confirm("Are you sure you want to delete the record?"))
{
window.location="Security.aspx?command=delete&user=" + userid;
}
return;
}


Anywayz, I thought to myself, if I just create on label, and in the
label, change the text in code to display what I want instead of using a
repeater control all together. This would be much like using the old ASP
model and using the reponse.write method where I wanted to display the
data. the only difference here is that I cannot use the reponse.write
function here because I would be writing to the end of my reponse html
code returned to the client. I know there is a performance hit with
calling the OnItemDataBound event. Would the method I just described be
less of a performance hit, or is there another way of looking at this?
Thanks
Click to expand...
Click to expand...
 
M

MattC

You could use an Image button, they look nicer too!

MattC
Shawn H. Mesiatowsky said:
Tried that, but the output from the button control makes it type=submit so
a clientside script to use window.navigate('someurl.htm'); will not work

MattC said:
you can use the button control and use reflection to get the instance
and add the onclick attribute to it then. Something like

if(e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType ==
ListItemType.Item )
{
Button ib = (Button)e.Item.FindControl("DeleteButton");
ib.Attributes.Add("onclick","DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() + ")";
}


MattC


Shawn H. Mesiatowsky said:
I have an array list that I want to display to the browser. I need very
precise control of the repeater, so I have function for the
OnItemDataBound event for the repater, then in that function I have my
code to alter the displayed data. for instance, I need to display a
button on the client side with client side script. I cannot accomplish
this using the Button web control, so instead I use a label and in the
text of the label I set it to
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";


Here is my code

private void Page_Load(object sender, System.EventArgs e)
{
ProjectProcess businessLogic = new ProjectProcess();
double SIDID = double.Parse(Request.Params["id"]);
ArrayList securityEntries;

securityEntries = businessLogic.listSecurityEntries(SIDID);
Repeater1.DataSource = securityEntries;
Repeater1.DataBind();
}

public void repeater1ItemDataBound(Object source,
System.Web.UI.WebControls.RepeaterItemEventArgs e)
{
if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
{
((HyperLink)e.Item.FindControl("lblUser")).Text =
(string)DataBinder.Eval(e.Item.DataItem,"UserName");
((HyperLink)e.Item.FindControl("lblUser")).NavigateUrl =
"Security.aspx?user=" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString();
((Label)e.Item.FindControl("DeleteButton")).Text="<button
onclick='DeleteEntry(" +
((int)DataBinder.Eval(e.Item.DataItem,"UserID")).ToString() +
")'>Delete</button>";

}

}
The client side code for the DeleteEntry function is as follows:

function DeleteMe(userid)
{
if(confirm("Are you sure you want to delete the record?"))
{
window.location="Security.aspx?command=delete&user=" + userid;
}
return;
}


Anywayz, I thought to myself, if I just create on label, and in the
label, change the text in code to display what I want instead of using a
repeater control all together. This would be much like using the old ASP
model and using the reponse.write method where I wanted to display the
data. the only difference here is that I cannot use the reponse.write
function here because I would be writing to the end of my reponse html
code returned to the client. I know there is a performance hit with
calling the OnItemDataBound event. Would the method I just described be
less of a performance hit, or is there another way of looking at this?
Thanks
Click to expand...
Click to expand...
Click to expand...
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

DataGrid OnItemDataBound problem in APS.NET C# 1
Control names within a repeater 4
Initialize dynamic controls on postback 1
Problem finding child control within nested DataList! 1
Formatting Repeater Items 5
Need help with hiding LinkButton in DataList 2
Datalist ItemDataBound modification 1
Add formatted text to JavaScript function call during ItemDataBound of a Repeater Control. 1

Top