WinForms DataGridView不会在设置DataSource时添加列

Question

我有DataGridView名为dgvInspectionsHistory

第一次运行以下代码行后，dgvInspectionsHistory会添加5列

this.ClearTable(this.dgvTemplatesConfiguration);

this.dgvTemplatesConfiguration.DataSource = templatesData;

this.dgvTemplatesConfiguration.ReadOnly = false;

//3 columns added

this.dgvTemplatesConfiguration.Columns.Add(this.CreateFaultsColumn(faultsData, "OuterFaults", 2));
this.dgvTemplatesConfiguration.Columns.Add(this.CreateFaultsColumn(faultsData, "InnerFaults", 5));

//2 more columns added

for (int i = 0; i <= dgvTemplatesConfiguration.Rows.Count - 1; i++)
{
     dgvTemplatesConfiguration["InnerFaults", i].Value = OkFaultName;
}

但是这段代码第二次运行后确实删除了一些列，dgvInspectionsHistory没有被填充回来：

this.ClearTable(this.dgvInspectionsHistory);
this.dgvInspectionsHistory.DataSource = inspectionsData;

//the desired 3 colums are not getting added

为什么会这样，我怎样才能达到预期的效果？

Answer 1

因为您正在使用两个不同的数据网格，即dgvTemplatesConfiguration和dgvInspectionsHistory，这就是为什么没有任何引用，请尝试在第二个代码中将dgvInspectionsHistory重命名为dgvTemplatesConfiguration并检查它是否有效