以编程方式设置EditText的布局权重

Question

我希望在水平布局中有两列EditTexts，它位于根布局中。在设计器中我添加了一个按钮来添加两个EditTexts，但是我找不到以编程方式编辑android：layout_weight的方法。

我的代码是

    private void BtnAddSet_Click(object sender, EventArgs e)
    {
        var editText = new EditText(this);
        editText.Text = "";

        editText.LayoutParameters = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WrapContent, LinearLayout.LayoutParams.WrapContent, 0.3f);

        var editText2 = new EditText(this);
        editText2.Text = "";

        editText2.LayoutParameters = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WrapContent, LinearLayout.LayoutParams.WrapContent, 0.3f);


        var horizontalLayout = new LinearLayout(this);
        horizontalLayout.Orientation = Orientation.Horizontal;
        horizontalLayout.AddView(editText);
        horizontalLayout.AddView(editText2);

        this.rootLayout.AddView(horizontalLayout);
    }