Au moins une des colonnes du contrôle DataGridView n'a aucun modèle de cellule

Je suis de cette exception.

System.InvalidOperationException was unhandled
Message=At least one of the DataGridView control's columns has no cell template.
Source=System.Windows.Forms
StackTrace:
at System.Windows.Forms.DataGridView.CompleteCellsCollection(DataGridViewRow dataGridViewRow)
at System.Windows.Forms.DataGridView.get_RowTemplateClone()
at System.Windows.Forms.DataGridView.RefreshRows(Boolean scrollIntoView)
at System.Windows.Forms.DataGridView.RefreshColumnsAndRows()
at System.Windows.Forms.DataGridView.OnBindingContextChanged(EventArgs e)
at System.Windows.Forms.Control.OnParentBindingContextChanged(EventArgs e)
at System.Windows.Forms.Control.OnBindingContextChanged(EventArgs e)
at System.Windows.Forms.Control.set_BindingContextInternal(BindingContext value)
at System.Windows.Forms.ContainerControl.set_BindingContext(BindingContext value)
at System.Windows.Forms.ContainerControl.get_BindingContext()
at System.Windows.Forms.Control.get_BindingContextInternal()
at System.Windows.Forms.Control.get_BindingContext()
at System.Windows.Forms.DataGridView.DataGridViewDataConnection.SetDataConnection(Object dataSource, String dataMember)
at System.Windows.Forms.DataGridView.set_DataSource(Object value)
at Bloowars_Tools.A1_ResultWnd.A1_ResultWnd_Shown(Object sender, EventArgs e) in D:\Documents\Visual Studio 2010\Projects\Bloowars Tools\Bloowars Tools\A1_ResultWnd.cs:line 72
at System.Windows.Forms.Form.OnShown(EventArgs e)
at System.Windows.Forms.Form.CallShownEvent()
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.RunDialog(Form form)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at Bloowars_Tools.MainWnd.bt_A1_Wyniki_Click(Object sender, EventArgs e) in D:\Documents\Visual Studio 2010\Projects\Bloowars Tools\Bloowars Tools\Form1.cs:line 165
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Bloowars_Tools.Program.Main() in D:\Documents\Visual Studio 2010\Projects\Bloowars Tools\Bloowars Tools\Program.cs:line 18
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:

C'est mon code:

        public List<Player> PlayerList { get; set; }
public A1_ResultWnd()
{
InitializeComponent();
//GenerateColumns();            
}
private void GenerateColumns()
{
Grid.AutoGenerateColumns = false;
DataGridViewColumn miejsce = new DataGridViewColumn();
miejsce.DataPropertyName = "Miejsce";
miejsce.HeaderText = "Miejsce";
miejsce.Name = "miejsceCollumn";
DataGridViewColumn imie = new DataGridViewColumn();
miejsce.DataPropertyName = "Imie";
miejsce.HeaderText = "Imię";
DataGridViewColumn uid = new DataGridViewColumn();
miejsce.DataPropertyName = "UID";
miejsce.HeaderText = "UID";
DataGridViewColumn rasa = new DataGridViewColumn();
miejsce.DataPropertyName = "Rasa";
miejsce.HeaderText = "Rasa";
DataGridViewColumn sex = new DataGridViewColumn();
miejsce.DataPropertyName = "Sex";
miejsce.HeaderText = "Płeć";
DataGridViewColumn klan = new DataGridViewColumn();
miejsce.DataPropertyName = "Klan";
miejsce.HeaderText = "Klan";
DataGridViewColumn strefa = new DataGridViewColumn();
miejsce.DataPropertyName = "Strefa";
miejsce.HeaderText = "Strefa";
DataGridViewColumn status = new DataGridViewColumn();
miejsce.DataPropertyName = "Status";
miejsce.HeaderText = "Status";
Grid.Columns.Add(miejsce);
Grid.Columns.Add(imie);
Grid.Columns.Add(uid);
Grid.Columns.Add(rasa);
Grid.Columns.Add(sex);
Grid.Columns.Add(klan);
Grid.Columns.Add(strefa);
Grid.Columns.Add(status);
}
private void A1_ResultWnd_Shown(object sender, EventArgs e)
{
GenerateColumns();
Grid.DataSource = PlayerList; //Here the exception occures
}

PlayreList n'est pas vide.

source d'informationauteur Hooch

c#collections datagridview exception winforms

49

Vous besoin de donner le type de la colonne. Si vous voulez une zone de texte de la colonne, vous devez utiliser le new DataGridViewTextBoxColumn(). Disons que vous voulez une zone de texte et une zone de liste déroulante, vous auriez les suivants:

aussi, vous êtes à l'appel de la première colonne nom, encore et encore.
```
    DataGridViewColumn miejsce = new DataGridViewTextBoxColumn();
miejsce.DataPropertyName = "Miejsce";
miejsce.HeaderText = "Miejsce";
miejsce.Name = "miejsceCollumn";
```
Modifier les éléments suivants pour le nom donné.
```
    DataGridViewColumn imie = new DataGridViewComboBoxColumn();
imie.DataPropertyName = "Imie";
imie.HeaderText = "Imię";
imie.Name = "imieCollumn"
```

Si DataGridView colonnes sont créées programmaticaly, puis le AutoGenerateColumns propriété de la DataGridView être définie sur false.

Mon code est un exemple d'un DataGridView en mesure d'afficher toutes les DataTable et il fonctionne parfaitement sous cette forme:

        //Prepare the DataViewGrid
dataGridView1.Columns.Clear();
//Add each column to the grid according to the data table structure
for (int i = 0; i < dataTable.Columns.Count; i++)
{
DataGridViewColumn dataGridViewColumn = new DataGridViewColumn();
DataGridViewCell dataGridViewCell = new DataGridViewTextBoxCell();
dataGridViewColumn.DataPropertyName = dataTable.Columns[i].ColumnName;
dataGridViewColumn.HeaderText = dataTable.Columns[i].ColumnName;
dataGridViewColumn.CellTemplate = dataGridViewCell;
dataGridViewColumn.Name = dataTable.Columns[i].ColumnName;
dataGridView1.Columns.Add(dataGridViewColumn);
}
//Set the DataSource for the binding
bindingSource1.DataSource = dataTable;
//Prevent unwanted columns autogeneration
dataGridView1.AutoGenerateColumns = false;
//Provide the binding to the DataGridView
dataGridView1.DataSource = bindingSource1;

J'ai juste besoin de définir la CellTemplate de la colonne pour résoudre le problème.

DataGridViewColumn c = new DataGridViewColumn();
c.Name = "ColumnName";
c.HeaderText = "DisplayText";
c.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
c.CellTemplate = new DataGridViewTextBoxCell();
dataGridView1.Columns.Add(c);

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