C#Datagridview刷新

这是关于我的DataGridView的所有代码。是否存在任何可能导致Refresh（）无法工作的情况

    this.usersDataGridView.AllowUserToAddRows = false;
    this.usersDataGridView.AllowUserToDeleteRows = false;
    this.usersDataGridView.AutoGenerateColumns = false;
    this.usersDataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
    this.usersDataGridView.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
    this.iDDataGridViewTextBoxColumn,
    this.uSERNAMEDataGridViewTextBoxColumn,
    this.nAMEDataGridViewTextBoxColumn,
    this.sURNAMEDataGridViewTextBoxColumn,
    this.pASSWORDDataGridViewTextBoxColumn,
    this.pERMISSIONDataGridViewTextBoxColumn});
    this.usersDataGridView.DataSource = this.usersBindingSource1;
    this.usersDataGridView.Location = new System.Drawing.Point(9, 9);
    this.usersDataGridView.Name = "usersDataGridView";
    this.usersDataGridView.ReadOnly = true;
    this.usersDataGridView.Size = new System.Drawing.Size(488, 291);
    this.usersDataGridView.TabIndex = 0;
    this.usersDataGridView.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.usersdataGridView_RowClick);

如果已经回答了这个问题，我提前表示歉意，但我找不到对我有帮助的答案。

试试这个：

dataGridView1.DataSource = typeof(DataSet); 
dataGridView1.DataSource = this.usersBindingSource1;

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什么不新鲜？是否尝试刷新绑定源？usersDataGridView.refresh（）；它不起作用。我试图刷新绑定源，但仍然不起作用尝试这样做：正如我看到的（如果我错了，请纠正我），如果我的数据源是列表类型，则此示例有效。我的数据源是dataset，我认为它更符合逻辑。我的意思是：

this.usersDataGridView.DataSource=null；this.usersDataGridView.DataSource=this.usersBindingSource1