Devexpress 从代码隐藏中填充aspxtbox和ASPxListBox

我正在为项目使用Devexpress ASPxGridView，但在用数据填充自定义编辑表单时遇到问题

情况如下

<Templates>
    <EditForm>
        Company Name:
        <dx:ASPxTextBox ID="CompanyName" runat="server" Value="<% #Bind('CompanyName') %>" />
        Parent:
        <dx:ASPxListBox ID="ParentGuid" runat="server" Value="<% #Bind('ParentGuid') %>" />
    </EditForm>
</Templates>

但那是行不通的。从哪里开始有什么建议吗？文档并没有很好地涵盖自定义表单：/

谢谢

==更新==

尝试将onhtmleditformcreated=“ASPxGridView1\u HtmlEditFormCreated”与方法一起使用

protected void ASPxGridView1_HtmlEditFormCreated(object sender, ASPxGridViewEditFormEventArgs e)
{
    Control CompanyName = ASPxGridView1.FindEditFormTemplateControl("CompanyName");
    if (CompanyName != null)
    {
        ASPxTextBox CompanyNameEdit = CompanyName as ASPxTextBox;
        CompanyName.Text = "Some Co";
    }

}

---

事实上，我使用Value=”“会把事情搞得一团糟。如果我删除绑定，框会被填充，但我无法获取其中的数据。有没有办法解决这个问题？

您应该使用稍微不同的方法：

使用事件设置编辑器属性。要获取编辑器实例，请使用gridView的方法。

答案是

填充名为CompanyList的ASPxComboBox

protected void ASPxGridView1_HtmlEditFormCreated(object sender, ASPxGridViewEditFormEventArgs e)
{
    Control ParentGuidControl = ASPxGridView1.FindEditFormTemplateControl("ParentGuid");
    if (ParentGuidControl != null)
    {
        ASPxComboBox ParentGuid = (ASPxComboBox)ParentGuidControl;

        var CompanyList = db.companies.OrderBy(x => x.CompanyName);
        ParentGuid.TextField = "CompanyName";
        ParentGuid.ValueField = "CompanyGuid";
        ParentGuid.DataSource = CompanyList;
        ParentGuid.DataBind();
    }
}

但是

如果你有像我一样的自定义表单

<Templates>
    <EditForm>
        Company Name:
        <dx:ASPxTextBox ID="CompanyName" runat="server" Value="<% #Bind('CompanyName') %>" />
        Parent:
        <dx:ASPxComboBox ID="ParentGuid" runat="server" Value="<% #Bind('ParentGuid') %>" />
    </EditForm>
</Templates>

但是如果您想从代码隐藏中填充一些表单值，请确保EditForm中没有#bind方法

<Templates>
    <EditForm>
        Company Name:
        <dx:ASPxTextBox ID="CompanyName" runat="server" />
        Parent:
        <dx:ASPxComboBox ID="ParentGuid" runat="server" />
    </EditForm>
</Templates>

---

玩得开心

纠正，这确实有效，但我使用Value=”“的事实让事情有点混乱。如果使用绑定表达式，则无需直接设置编辑器的值。它应该是自动设置的。以下是此功能的一个示例：

protected void ASPxGridView1_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)
{
    IDictionaryEnumerator enumerator = e.NewValues.GetEnumerator();

    string CompanyName = string.Empty;
    Guid ParentGuid = Guid.Empty;

    enumerator.Reset();
    while (enumerator.MoveNext())
        if (enumerator.Key.ToString() == "CompanyName")
            CompanyName = enumerator.Value.ToString();
        else if (enumerator.Key.ToString() == "ParentGuid")
            ParentGuid = new Guid(enumerator.Value.ToString());

    // Do insert trick here

}

<Templates>
    <EditForm>
        Company Name:
        <dx:ASPxTextBox ID="CompanyName" runat="server" />
        Parent:
        <dx:ASPxComboBox ID="ParentGuid" runat="server" />
    </EditForm>
</Templates>

protected void ASPxGridView1_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)
{
    string CompanyName = string.Empty;
    Guid ParentGuid = Guid.Empty;

    // This method is a bit more secure
    Control CompanyNameControl = ASPxGridView1.FindEditFormTemplateControl("CompanyName");
    if (CompanyNameControl != null)
    {
        ASPxTextBox CompanyNameTb = (ASPxTextBox)CompanyNameControl;
        CompanyName = CompanyNameTb.Text.ToString();
    }

    // A bit less secure, but lesser code
    ASPxComboBox ParentGuidControl = (ASPxComboBox)ASPxGridView1.FindEditFormTemplateControl("ParentGuid");
    ParentGuid = new Guid(ParentGuidControl.SelectedItem.Value.ToString());

    // Do insert...

}