I created this datagrid in my .aspx file.
<asp:datagrid id="Computerchange" runat="server" AllowPaging="True" PageSize="2" AutoGenerateColumns="False" BorderColor="Gainsboro" Height="500px">
<Columns>
<asp:EditCommandColumn ButtonType="LinkButton" UpdateText="Update" HeaderText="Admin Functions" CancelText="Cancel" EditText="Edit"></asp:EditCommandColumn>
<asp:ButtonColumn Text="Delete" HeaderText="Delete" CommandName="Delete"></asp:ButtonColumn>
<asp:BoundColumn DataField="com_id" ReadOnly="True" HeaderText="Computer Number"></asp:BoundColumn>
<asp:BoundColumn DataField="company" HeaderText="Company"></asp:BoundColumn>
<asp:BoundColumn DataField="price" HeaderText="Price"></asp:BoundColumn>
<asp:BoundColumn DataField="model" HeaderText="Model"></asp:BoundColumn>
<asp:BoundColumn DataField="description" HeaderText="Description"></asp:BoundColumn>
<asp:BoundColumn DataField="id" ReadOnly="True" HeaderText="Category"></asp:BoundColumn>
<asp:BoundColumn DataField="quantity" ReadOnly="False" HeaderText="Quantity"></asp:BoundColumn>
<asp:BoundColumn DataField="imgSrc" HeaderText="Image"></asp:BoundColumn>
</Columns>
</asp:datagrid>
With this datagrid I want to edit-delete-update these columns in my database. When I have ReadOnly="False"
in the quantity column then it works fine. I can Edit-Delete-Update everything. Sometimes I want to edit all the columns except QUANTITY. But when I convert it to True
, then I have the following error when I click the Update button
Specified argument was out of the range of valid values. Parameter name: index
Stack Trace:
[ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: index]
System.Web.UI.ControlCollection.get_Item(Int32 index) +8750274 AdminMainPage.Computerchange_UpdateCommand(Object source, DataGridCommandEventArgs e) +626 System.Web.UI.WebControls.DataGrid.OnUpdateCommand(DataGridCommandEventArgs e) +115 System.Web.UI.WebControls.DataGrid.OnBubbleEvent(Object source, EventArgs e) +498 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37 System.Web.UI.WebControls.DataGridItem.OnBubbleEvent(Object source, EventArgs e) +121 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37 System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +125 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +169
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +9 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +176 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563
Do you know why I have this error and what can I do to fix it? I wrote this function for the update Command
private void Computerchange_UpdateCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
//Store updated column values in local variables:
//string updateCOM_ID = e.Item.Cells["com_id"].Text;
string updateCOM_ID = e.Item.Cells[2].Text;
string updateCompany = ((TextBox)e.Item.Cells[3].Controls[0]).Text;
double updatePrice = double.Parse(((TextBox)e.Item.Cells[4].Controls[0]).Text);
string updateModel = ((TextBox)e.Item.Cells[5].Controls[0]).Text;
string updateDescription = ((TextBox)e.Item.Cells[6].Controls[0]).Text;
int updateCategoryId = int.Parse(e.Item.Cells[7].Text);
string updateImage = ((TextBox)e.Item.Cells[9].Controls[0]).Text;
string updateQuantity = ((TextBox)e.Item.Cells[8].Controls[0]).Text;
newView.RowFilter = "com_id='" + updateCOM_ID + "'";
if (newView.Count > 0)
{
//Delete the row that is being updated
newView.Delete(0);
}
newView.RowFilter = "";
//Create a new DataRow and populate it with the new data.
DataRow Row = Table.NewRow();
Row["com_id"] = updateCOM_ID;
Row["company"] = updateCompany;
Row["price"] = updatePrice;
Row["model"] = updateModel;
Row["description"] = updateDescription;
Row["id"] = updateCategoryId;
Row["imgSrc"] = updateImage;
//Row["quantity"] = updateQuantity;
//Insert the new DataRow:
Table.Rows.Add(Row);
Computerchange.EditItemIndex = -1;
Computerchange.DataSource = newView;
Computerchange.DataBind();
// Now update the database with the new data
adminCentral1.adminCentral newData = new adminCentral1.adminCentral();
string results;
results = newData.updateItem(updateCOM_ID, updateCompany, updatePrice, updateModel, updateDescription, updateImage, updateCategoryId, updateQuantity);
if (results == "Success")
{
errorLabel.Text = "Computer Updated to database!";
}
else
{
errorLabel.Text = results;
}