如何使文本框在网格视图中只读

本文关键字：视图 只读 网格 何使 文本 | 更新日期: 2023-09-27 18:24:27

我有一个网格视图，其中文本框应仅在少数情况下可编辑。。我已经尝试了以下代码，但它不起作用如何解决这个问题并使文本框不可编辑。。

protected void GridView1_OnRowEditing(object sender, GridViewEditEventArgs e)
    {
         ....
        if (some condition)
           {
             ..................
           } 
        else(some condition)
           {
            .............
           }
        else if(some other)
           {
             TextBox itm = (GVEditRate.Rows[e.NewEditIndex].FindControl("TextBox1") as TextBox);
              itm.Enabled = true;
             TextBox prfc = (GVEditRate.Rows[e.NewEditIndex].FindControl("TextBox2") as TextBox); 
              prfc.Enabled = false;
             TextBox anest = (GVEditRate.Rows[e.NewEditIndex].FindControl("TextBox3") as TextBox);
              anest.Enabled = false;
           }

如何使文本框在网格视图中只读

你试过这个吗：

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
      if (e.Row.RowState == DataControlRowState.Edit || e.Row.RowState == DataControlRowState.Alternate)
      {
       //on you condition
        TextBox txt = (TextBox)e.Row.FindControl("ControlID");
        if(txt !=null)
        {
          txt.Attributes.Add("readonly", "readonly");           
         // txt.Attributes.Remove("readonly"); To remove readonly attribute
        }
      }
    }

正如注释中所示，您可以在RowDataBound事件上执行以下代码

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowState == DataControlRowState.Edit || e.Row.RowState == DataControlRowState.Alternate)
    {
       //on you condition
        TextBox txt = (TextBox)e.Row.FindControl("ControlID");
        txt.ReadOnly = true;
    }
}

我更喜欢在网格列的页面中使用数据绑定表达式

<asp:TextBox runat="server" Enabled='<%# YourMethodThatReturnCondition(Eval("Field1"), Eval("Field2"), ...)%>' ></asp:TextBox>

Wehre YourMethodThatReturnCondition是一个返回布尔的方法

    <asp:GridView ID="grdTaskDataCat1" OnRowCommand="grdTaskDataCat1_RowCommand" OnSorting="grdTaskDataCat1_Sorting" AutoGenerateColumns="false" ShowHeaderWhenEmpty="true" AllowSorting="true" Width="100%" DataKeyNames="ID" runat="server" OnRowDataBound="grdTaskDataCat1_RowDataBound">
    <Columns>                                                            <asp:TemplateField HeaderText="Sr No" Visible="false">                                                      <ItemTemplate>                                                               <asp:TextBox ID="txtId" Visible="false" ReadOnly Style="width: 30%" Text='<%# Bind("ID")%>' runat="server"></asp:TextBox>                                                  </ItemTemplate>                                                          </asp:TemplateField>
    </Columns> 
    </asp:GridView>

网格视图的ROW数据绑定

protected void grdTaskDataCat1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
TextBox txt = (TextBox)e.Row.FindControl("txtTaskName");
                if (txt.Text != "")
                {
                    txt.Attributes.Add("readonly", "readonly");
                }
}
}
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