Visual Studio .NET - Another problem I ran to
Asked By Jesse Gomez on 09-Dec-05 12:31 PM
Ok I have 9 fields
field 9 text is Status and I have a droplistbox with the ID="dropdown" with two values
Open, Close
and I get this error message when I try updating it
http://www.badongo.com/file.php?file=dropdownerror__2005-12-09_updaterror.bmp
does these mean I need to change the name to TextBix to dropdown???
please help thx alot!
Change to DropDown
Asked By F Cali on 09-Dec-05 12:35 PM
Hi Jesse,
Since it's a dropdownlist control, you have to change the casting of the control from TextBox to DropDownList.
I do this
Asked By Jesse Gomez on 09-Dec-05 12:42 PM
string status = ((DropDownList)e.Item.Cells[9].Controls[0]).Text;
gives me an error ?
I get this error message
Asked By Jesse Gomez on 09-Dec-05 12:44 PM
Specified cast is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Specified cast is not valid.
Source Error:
Line 102: string serialnumber = ((TextBox)e.Item.Cells[7].Controls[0]).Text;
Line 103: string storenumber = ((TextBox)e.Item.Cells[8].Controls[0]).Text;
Line 104: string status = ((DropDownList)e.Item.Cells[9].Controls[0]).Text;
Line 105:
Line 106:
Source File: c:\inetpub\wwwroot\gssquarantines\quarantines.aspx.cs Line: 104
Stack Trace:
[InvalidCastException: Specified cast is not valid.]
gssquarantines.WebForm1.datagrid_UpdateCommand(Object source, DataGridCommandEventArgs e) in c:\inetpub\wwwroot\gssquarantines\quarantines.aspx.cs:104
System.Web.UI.WebControls.DataGrid.OnUpdateCommand(DataGridCommandEventArgs e) +109
System.Web.UI.WebControls.DataGrid.OnBubbleEvent(Object source, EventArgs e) +507
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +26
System.Web.UI.WebControls.DataGridItem.OnBubbleEvent(Object source, EventArgs e) +106
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +26
System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +121
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +115
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +138
System.Web.UI.Page.ProcessRequestMain() +1277
Use SelectedItem Text
Asked By F Cali on 09-Dec-05 12:45 PM
Since this is a drop down list, you should use the SelectedItem.Text property:
string status = ((DropDownList)e.Item.Cells[9].Controls[0]).SelectedItem.Text;
Earlier
Asked By Jesse Gomez on 09-Dec-05 12:49 PM
Hey bro earlier you asked me for this page
http://g.1asphost.com/diosdivino/myasppage.htm
I still get the out of index error message please help me out thanks alot
.
I wanna resize all the fields thx!
ok my new code looks like this
Asked By Jesse Gomez on 09-Dec-05 12:52 PM
private void datagrid_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
int ID = (int) datagrid.DataKeys[(int) e.Item.ItemIndex];
tring datereceived = ((TextBox)e.Item.Cells[1].Controls[0]).Text;
string unitmanufacturer = ((TextBox)e.Item.Cells[2].Controls[0]).Text;
string firstname = ((TextBox)e.Item.Cells[3].Controls[0]).Text;
string lastname = ((TextBox)e.Item.Cells[4].Controls[0]).Text;
tring airwaybill = ((TextBox)e.Item.Cells[5].Controls[0]).Text;
string unitmodel = ((TextBox)e.Item.Cells[6].Controls[0]).Text;
string serialnumber = ((TextBox)e.Item.Cells[7].Controls[0]).Text;
string storenumber = ((TextBox)e.Item.Cells[8].Controls[0]).Text;
string status = ((DropDownList)e.Item.Cells[9].Controls[0]).SelectedItem.Text;
string sql =
"UPDATE records SET DateReceived='" + datereceived +
"', UnitManufacturer='" + unitmanufacturer +
"', FirstName='" + firstname +
"', LastName='" + lastname +
"', AirwayBill='" + airwaybill +
"', UnitModel='" + unitmodel +
"', SerialNumber='" + serialnumber +
"', StoreNumber='" + storenumber +
"', Status='" + status +
"' WHERE ID=" + ID.ToString();
ExecuteNonQuery(sql);
datagrid.EditItemIndex = -1 ;
ReadRecords();
}
and I still get this error message when I hit the Update link
Specified cast is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Specified cast is not valid.
Source Error:
Line 102: string serialnumber = ((TextBox)e.Item.Cells[7].Controls[0]).Text;
Line 103: string storenumber = ((TextBox)e.Item.Cells[8].Controls[0]).Text;
Line 104: string status = ((DropDownList)e.Item.Cells[9].Controls[0]).SelectedItem.Text;
Line 105:
Line 106:
Source File: c:\inetpub\wwwroot\gssquarantines\quarantines.aspx.cs Line: 104
Stack Trace:
[InvalidCastException: Specified cast is not valid.]
gssquarantines.WebForm1.datagrid_UpdateCommand(Object source, DataGridCommandEventArgs e) in c:\inetpub\wwwroot\gssquarantines\quarantines.aspx.cs:104
System.Web.UI.WebControls.DataGrid.OnUpdateCommand(DataGridCommandEventArgs e) +109
System.Web.UI.WebControls.DataGrid.OnBubbleEvent(Object source, EventArgs e) +507
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +26
System.Web.UI.WebControls.DataGridItem.OnBubbleEvent(Object source, EventArgs e) +106
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +26
System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +121
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +115
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +138
System.Web.UI.Page.ProcessRequestMain() +1277
please help me on the width
Asked By Jesse Gomez on 09-Dec-05 01:36 PM
wehn I edit the width on the text box is too long
Basically this means that
Asked By Aarthi Saravanakumar on 09-Dec-05 02:36 PM
string status = ((DropDownList)e.Item.Cells[9].Controls[0]).SelectedItem.Text;
e.Item.Cells[9].Controls[0] is not of type Drop DownList
print
string status = (e.Item.Cells[9].Controls[0].GetType());
And see what the type of the control is first...
Updated Code
Asked By F Cali on 09-Dec-05 11:22 PM
Hi Jesse,
Try this:
string serialnumber = ((TextBox)e.Item.Cells[7].Controls[0]).Text;
string storenumber = ((TextBox)e.Item.Cells[8].Controls[0]).Text;
string status = ((DropDownList)e.Item.Cells[9].Controls[0]).SelectedItem.Text;
DropDownList?
Asked By F Cali on 10-Dec-05 12:27 AM
Hi Jesse,
Are you sure that the control in Cell 9 is a drop down list and not a text box or a list box? If it is a list box, you can use the following:
string status = ((ListBox)e.Item.Cells[9].Controls[0]).SelectedItem.Text;
How are you changing the type of control for the Status column? Can you post the code and the page as well.
well
Asked By Jesse Gomez on 10-Dec-05 12:48 AM
I will see if I can figure it out if I have problmes I will botify you thx alot though.
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code is string str1 = ConfigurationManager.ConnectionStrings["AppConnectionString1"].ConnectionString; SqlConnection con1 = new SqlConnection(str1); con1.Open(); DropDownList d = new DropDownList(); d = (DropDownList)gdview1.FindControl("DropDownList"); TextBox t1 = new TextBox(); t1 = (TextBox) gdview1.FindControl("Textbox"); SqlCommand cmd2 = new SqlCommand("UPDATE ScheduleInterview SET Status = '"+t1.Text+"'where Id = 1 ", con1); cmd2
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