我在以编程方式将 a 添加RegularExpressionValidator
到任何容器控件(面板、占位符等)时遇到问题。这是我的代码:
// Get the path of the file on the server
string page = Page.Request.FilePath;
int managementCompanyId = Convert.ToInt32(Session["ManagementCompanyId_AddResident"].ToString().Trim());
// Get field validation details
Collection<ExportFieldValidation> details = ValidationBL.GetValidationDetails(managementCompanyId, page);
ContentPlaceHolder body = Page.Form.FindControl("ContentBody") as ContentPlaceHolder;
foreach (ExportFieldValidation detailItem in details)
{
// Check if the control exists on the page
TextBox control = body.FindControl(detailItem.FieldToValidate) as TextBox;
if (control != null)
{
RegularExpressionValidator regex = new RegularExpressionValidator()
{
ControlToValidate = control.UniqueID.ToString(),
ID = detailItem.ValidatorFieldName,
ValidationExpression = detailItem.RegularExpression,
Page = this,
SetFocusOnError = true,
Text = detailItem.ErrorMessage,
Enabled = true,
EnableViewState = true,
CssClass = "Error"
};
Panel validationPanel = body.FindControl("PanelAddResident") as Panel;
validationPanel.Controls.Add(regex);
}
}
当我转到该页面时,我得到了错误Unable to find control id 'myControl' referenced by the 'ControlToValidate' property of 'RegularExpressionValidatorResidentId'
,我的控制是control.UniqueID.ToString()
上面的,我们存储在数据库中并且肯定是正确的,因为我已经对值进行了双重、三重和四重检查。
但是,如果我替换validationPanel.Controls.Add(regex);
一切Page.Form.Controls.Add(regex);
都可以正常工作。
有没有办法将我的验证器添加到容器中?我确定我只是做错了什么,或者在某处中间错过了一步。任何帮助将不胜感激。