From VS.NET 03 AND VB.NET
I added a dropdown list to a data grid control in response to the
EditCommand event to force users to pick values from a list and not
type them in. I used the following code:
'Hide the existing txt box
Dim txt As TextBox
txt = CType(e.Item.Ce lls(0).Controls (0), TextBox)
txt.Visible = False
'display a ddl instead
Dim ds As New DataSet
ds = dbCalls.GetData
Dim ddl As New DropDownList
ddl.ID = "myID"
ddl.DataSource = ds
ddl.DataTextFie ld = "myTxt"
ddl.DataValueFi eld = "myID"
ddl.DataBind()
ddl.Attributes. Add("class", "myCSS")
e.Item.Cells(0) .Controls.Add(d dl)
This works great (everything displays as intended in the UI).
However, when I code the UpdateCommand I cannot find the DropDownList
control I created above. When I debug and add a watch for
e.Item.Cells(0) it only shows a single control
(e.Item.Cells(0 ).controls(0) which is the text box). How can I
reference the DropDownList control? I am using the following code:
Dim ddlMaintCatID As DropDownList
ddlMaintCatID = CType(e.Item.Ce lls(0).Controls (X), DropDownList)
For X i tried the following vales (0 and 1). For 0 I get and invalid
cast error becuase controls(0) is a text box and for 1 I get an index
out of range error.
What am I missing???
thanks in advance for your time and assistance.
Scott
2  1781 
ddlMaintCatID = CType(e.Item.Ce lls(0).FindCont rol("myID"), DropDownList)
the above will work if you used
ddl.ID = "myID" and "myID" is a string, if it is the unique DB id then you
will have to substitue something to determine the currect ID (use a hidden
column and grab the text property or something)
"mystical_potat o" <He********@Fin gDie.Now> wrote in message
news:27******** *************** *********@4ax.c om... From VS.NET 03 AND VB.NET
I added a dropdown list to a data grid control in response to the
EditCommand event to force users to pick values from a list and not
type them in. I used the following code:
'Hide the existing txt box
Dim txt As TextBox
txt = CType(e.Item.Ce lls(0).Controls (0), TextBox)
txt.Visible = False
'display a ddl instead
Dim ds As New DataSet
ds = dbCalls.GetData
Dim ddl As New DropDownList
ddl.ID = "myID"
ddl.DataSource = ds
ddl.DataTextFie ld = "myTxt"
ddl.DataValueFi eld = "myID"
ddl.DataBind()
ddl.Attributes. Add("class", "myCSS")
e.Item.Cells(0) .Controls.Add(d dl)
This works great (everything displays as intended in the UI).
However, when I code the UpdateCommand I cannot find the DropDownList
control I created above. When I debug and add a watch for
e.Item.Cells(0) it only shows a single control
(e.Item.Cells(0 ).controls(0) which is the text box). How can I
reference the DropDownList control? I am using the following code:
Dim ddlMaintCatID As DropDownList
ddlMaintCatID = CType(e.Item.Ce lls(0).Controls (X), DropDownList)
For X i tried the following vales (0 and 1). For 0 I get and invalid
cast error becuase controls(0) is a text box and for 1 I get an index
out of range error.
What am I missing???
thanks in advance for your time and assistance.
Scott
Hi Potato:
I have some articles with C# source that might help. They talk about
the basics of using FindControl and using DropDownLists in a grid.
In Search Of ASP.NET controls http://odetocode.com/116.aspx
Embedding DropDownList Controls In A Grid http://odetocode.com/Articles/231.aspx
HTH,
--
Scott http://www.OdeToCode.com
On Tue, 07 Sep 2004 14:37:16 GMT, mystical_potato
<He********@Fin gDie.Now> wrote: From VS.NET 03 AND VB.NET
I added a dropdown list to a data grid control in response to the
EditCommand event to force users to pick values from a list and not
type them in. I used the following code:
'Hide the existing txt box
Dim txt As TextBox
txt = CType(e.Item.Ce lls(0).Controls (0), TextBox)
txt.Visible = False
'display a ddl instead
Dim ds As New DataSet
ds = dbCalls.GetData
Dim ddl As New DropDownList
ddl.ID = "myID"
ddl.DataSource = ds
ddl.DataTextFie ld = "myTxt"
ddl.DataValueFi eld = "myID"
ddl.DataBind()
ddl.Attributes. Add("class", "myCSS")
e.Item.Cells(0) .Controls.Add(d dl)
This works great (everything displays as intended in the UI).
However, when I code the UpdateCommand I cannot find the DropDownList
control I created above. When I debug and add a watch for
e.Item.Cells(0 ) it only shows a single control
(e.Item.Cells( 0).controls(0) which is the text box). How can I
reference the DropDownList control? I am using the following code:
Dim ddlMaintCatID As DropDownList
ddlMaintCatI D = CType(e.Item.Ce lls(0).Controls (X), DropDownList)
For X i tried the following vales (0 and 1). For 0 I get and invalid
cast error becuase controls(0) is a text box and for 1 I get an index
out of range error.
What am I missing???
thanks in advance for your time and assistance.
Scott This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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