javascript-如何在asp.net的gridview中使用JavaScript在按钮单击上应用文本框空白验证？

我如何在javascript的gridview内的按钮单击上应用文本框空白验证？
一个网格视图,每行包含2个文本框和一个保存按钮.我想在单击相应的保存按钮时验证文本框.

我已经应用了逻辑,但问题是它仅适用于经过硬编码的textBox id.如何修改此代码,使其适用于所有gridview行？

function gvValidate() {

var grid = document.getElementById('<%= GridViewCTInformation.ClientID %>');
 if(grid!=null) 
  {
   var Inputs = grid.getElementsByTagName("input"); 
    for(i = 0; i < Inputs.length; i++) 
     {
      if(Inputs[i].type == 'text' ) 
       {
           if (Inputs[i].id == 'ctl00_contentPlaceHolderSubScreen_GridViewCTInformation_ctl02_TextBoxCTTermCode') 
             {
                 if (Inputs[i].value == "") {
                     alert("Enter values,blank is not allowed");
                     return false;
                 }

             }
             else if (Inputs[i].id == 'ctl00_contentPlaceHolderSubScreen_GridViewCTInformation_ctl02_TextBoxCTTermDesc') {
                 if (Inputs[i].value == "") {
                     alert("Enter values,blank is not allowed");
                     return false;
                 }
             }

      }
     }
     return true;
 }

}

 Protected Sub GridViewTaxInformation_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridViewTaxInformation.RowDataBound
    Try
        If e.Row.RowType = DataControlRowType.DataRow Then

            Dim btnSave As Button = DirectCast(e.Row.FindControl("ButtonSave"), Button)
            btnSave.Attributes.Add("onclick", "return gvValidate()")
        End If
    Catch ex As Exception
        Common.WriteLog(ex.Message)
        Common.WriteLog((ex.StackTrace))
        Response.Redirect("..\Errors.aspx", False)
    End Try
End Sub

解决方法:

终于我解决了我的问题.我刚刚将gridview的行索引传递给了javascript函数.

这是代码

 function gvValidate(rowIndex) {

var grid = document.getElementById('<%= GridViewCTInformation.ClientID %>');
 if(grid!=null) {
     var Inputs = grid.rows[rowIndex + 1].getElementsByTagName("input"); 
    for(i = 0; i < Inputs.length; i++) 
     {
      if(Inputs[i].type == 'text' ) 
       {
                  if (Inputs[i].value == "") {
                     alert("Enter values,blank is not allowed");
                     return false;
                 }

      }
     }
     return true;
 }

}

Protected Sub GridViewCTInformation_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridViewCTInformation.RowDataBound
    Try
        If e.Row.RowType = DataControlRowType.DataRow Then
            Dim btnSave As Button = DirectCast(e.Row.FindControl("ButtonCTInfoSave"), Button)
            btnSave.Attributes.Add("onclick", "return gvValidate(" + e.Row.RowIndex.ToString() + ")")
        End If
    Catch ex As Exception
        Common.WriteLog(ex.Message)
        Common.WriteLog((ex.StackTrace))
        Response.Redirect("..\Errors.aspx", False)
    End Try
End Sub

标签：validation,asp-net,vb-net,javascript,c
来源： https://codeday.me/bug/20191201/2080093.html