Resize datagrid problem in Winforms

[VIshnu]

Hi,

I have a custom built DataGrid (Winforms) to which I have added menus for sort, find, hide columns etc. In one of the columns I have inherited DataGridTextBoxColumn and overriden methods to show ComboBox.

When I load the datagrid I have no issues. But when I hide a column and then resize or click on the combobox column(Inherited using DataGridTextBoxColumn) it gives me an error saying

An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll

'375' is not a valid value for 'value'. 'value' should be between 'minimum' and 'maximum'.

Can someone please help. This happens only when I hide a column. I am setting the size of the column to 0 when I do this.

Please find below the code I use to hidecolumns and bind the currentstyle to datagrid.

private void HideColumns(object sender, System.EventArgs e)

{

try

{

MenuItem mnuit;

CurrencyManager cm = (CurrencyManager) this.BindingContext[this.DataSource,this.DataMember];

IList lists = cm.List;

ITypedList iType = (ITypedList) lists;

string stylename = iType.GetListName(null);

DataGridTableStyle dtStyle = this.TableStyles[stylename];

if(!this.mnuHidden.Enabled)

{mnuHidden.Enabled =true;}

if(dtView==null)

{BindDefualtDataMember();}

//Add new menu to this menu as child

mnuit = new MenuItem(dtView.Table.Columns[intSelectedCol+1].ColumnName, new System.EventHandler(enableSubMenus) );

int mnuCount=this.mnuHidden.MenuItems.Count;

if(mnuCount > 0)

{

this.mnuHidden.MenuItems.Add(this.mnuHidden.MenuItems.Count,mnuit);

htable.Add(mnuCount, this.TableStyles[stylename].GridColumnStyles[intSelectedCol].Width);

}

else

{

this.mnuHidden.MenuItems.Add(0,mnuit);

htable.Add(mnuCount, this.TableStyles[stylename].GridColumnStyles[intSelectedCol].Width);

}

dtStyle.GridColumnStyles[intSelectedCol].Width = 0;

Invalidate();

this.TableStyles.Add(dtStyle);

}

catch(Exception ex)

{

//Do nothing

MessageBox.Show(ex.Message);

}

}

private void BindDefualtDataMember()

{

BindingManagerBase cm = this.BindingContext[this.DataSource,this.DataMember] ;

DataRowView drv =(DataRowView) cm.Current ;

DataTable dt = drv.Row.Table ;

dtView = dt.DefaultView;

}

[André]

I had a simular problem. I managed to solve it by set the column width to 1 instead of 0. It gives at least a hint of where the problem is located.

/André

> Hi,
>
> I have a custom built DataGrid (Winforms) to which I have added menus for sort, find, hide columns etc. In one of the columns I have inherited DataGridTextBoxColumn and overriden methods to show ComboBox.
>
> When I load the datagrid I have no issues. But when I hide a column and then resize or click on the combobox column(Inherited using DataGridTextBoxColumn) it gives me an error saying
>
> An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll
>
> '375' is not a valid value for 'value'. 'value' should be between 'minimum' and 'maximum'.
>
>
> Can someone please help. This happens only when I hide a column. I am setting the size of the column to 0 when I do this.
>
> Please find below the code I use to hidecolumns and bind the currentstyle to datagrid.
>
> private void HideColumns(object sender, System.EventArgs e)
>
> {
>
>
> try
>
> {
>
> MenuItem mnuit;
>
> CurrencyManager cm = (CurrencyManager) this.BindingContext[this.DataSource,this.DataMember];
>
> IList lists = cm.List;
>
> ITypedList iType = (ITypedList) lists;
>
> string stylename = iType.GetListName(null);
>
> DataGridTableStyle dtStyle = this.TableStyles[stylename];
>
> if(!this.mnuHidden.Enabled)
>
> {mnuHidden.Enabled =true;}
>
>
>
> if(dtView==null)
>
> {BindDefualtDataMember();}
>
> //Add new menu to this menu as child
>
>
> mnuit = new MenuItem(dtView.Table.Columns[intSelectedCol+1].ColumnName, new System.EventHandler(enableSubMenus) );
>
> int mnuCount=this.mnuHidden.MenuItems.Count;
>
>
> if(mnuCount > 0)
>
> {
>
> this.mnuHidden.MenuItems.Add(this.mnuHidden.MenuItems.Count,mnuit);
>
> htable.Add(mnuCount, this.TableStyles[stylename].GridColumnStyles[intSelectedCol].Width);
>
> }
>
> else
>
> {
>
> this.mnuHidden.MenuItems.Add(0,mnuit);
>
> htable.Add(mnuCount, this.TableStyles[stylename].GridColumnStyles[intSelectedCol].Width);
>
> }
>
>
> dtStyle.GridColumnStyles[intSelectedCol].Width = 0;
>
>
> Invalidate();
>
> this.TableStyles.Add(dtStyle);
>
>
> }
>
> catch(Exception ex)
>
> {
>
> //Do nothing
>
> MessageBox.Show(ex.Message);
>
> }
>
> }
>
>
>
> private void BindDefualtDataMember()
>
> {
>
> BindingManagerBase cm = this.BindingContext[this.DataSource,this.DataMember] ;
>
> DataRowView drv =(DataRowView) cm.Current ;
>
> DataTable dt = drv.Row.Table ;
>
> dtView = dt.DefaultView;
>
>
> }
>
>