Question

我有关于我对textbox字符串null的验证的问题，我确实做了一个for循环来计算文本框是空的，但我的问题是我如何使用空文本框上的红色背景添加css样式如果我正在使用一个for循环。我已经有了css样式示例：（txtNumberOfDaysCovered.cssClass =“form-control border-danger”）

我的循环：

 string[] countTextbox = new string[8];
 countTextbox[0] = txtEndDate.Text;
 countTextbox[1] = txtLessLeaveTaken.Text;
 countTextbox[2] = txtnumberOfDaysCovered.Text;
 countTextbox[3] = txtoperation.Text;
 countTextbox[4] = txtposition.Text;
 countTextbox[5] = txtStartDate.Text;
 countTextbox[6] = txtThissApp.Text;
 countTextbox[7] = txApprover.Text;

 for (int i = 0; i < countTextbox.Length; i++)
 {
     if (string.IsNullOrWhiteSpace(countTextbox[i]))
     {

         ValidationMessage.Text = "Please fill up all the required fields";
         ScriptManager.RegisterStartupScript(this, GetType(), "ServerControlScript", "<script>$('#modal_form_inline').modal('show');$('#modal_form_inline_Confimation').modal('hide');</script>", false);
                return;
     }

}

我不能简单地做这些ff代码：countTextbox[i].cssClass = "form-control border-danger"

Answer 1

我只是不能简单地做这些ff代码：countTextbox [i] .cssClass = “形式控制边界危险”

string[] countTextbox = new string[8];

countTextbox是String Array。你不能为它分配cssClass。你需要的只是一个Texbox。

Answer 2

  TextBox[] countTextbox  = new TextBox[8];
        countTextbox[0] = txtEndDate;
        countTextbox[1] = txtLessLeaveTaken;
        countTextbox[2] = txtnumberOfDaysCovered;
        countTextbox[3] = txtoperation;
        countTextbox[4] = txtposition;
        countTextbox[5] = txtStartDate;
        countTextbox[6] = txtThissApp;
        countTextbox[7] = txApprover;

        for (int i = 0; i < countTextbox.Length; i++)
        {
            if (string.IsNullOrWhiteSpace(countTextbox[i].Text))
            {

                countTextbox[i].CssClass = "form-control border-danger";
                ValidationMessage.Text = "Please fill up all the required fields";
                ScriptManager.RegisterStartupScript(this, GetType(), "ServerControlScript", "<script>$('#modal_form_inline').modal('show');$('#modal_form_inline_Confimation').modal('hide');</script>", false);
                return;
            }


        }

解决了!!

Answer 3

你可以使用Form Validations，但无论如何你想以这种方式做，你可以做下面未经测试（未编译）的事情，但你会有一个想法

var ListOfTextBoxes = new string[] { "txtEndDate","txtLessLeaveTaken","txtnumberOfDaysCovered","txtoperation","txtposition","txtStartDate","txtThissApp","txApprover"};
ListOfTextBoxes.ForEach(m => 
{
    var textbox = (TextBox)FindControl(m);
    if(string.IsNullOrWhiteSpace(textbox.text))
    {
       textbox.cssClass = "form-control border-danger";
    }
 });

查看Control.FindControl了解详情。

如何在for循环中为textboxes添加css类

3 个答案: