C# 在后台更改TextBox属性 (可编辑或只读,颜色)

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 private void ChangTextCouldEdit()

    {

        foreach (DataGridItem dgi in DataGrid1.Items)

        {

            TextBox txtMaterialID = (TextBox)dgi.FindControl("txtMaterialID");

            TextBox txtTaxedUnitPrice = (TextBox)dgi.FindControl("lblTaxedUnitPrice");

            TextBox txtTax = (TextBox)dgi.FindControl("lblTax");

            HtmlInputHidden hdnMaterialClassID = (HtmlInputHidden)dgi.FindControl("hdnMaterialClassId");

            if (txtMaterialID.Text.Trim() != "" && hdnMaterialClassID.Value == 2)

            {

                txtTaxedUnitPrice.Attributes["ContentEditable"] = "true";

                txtTaxedUnitPrice.Attributes["style"] = "width: 100px;";

                txtTaxedUnitPrice.Attributes["class"] = "input2";

            }

            else

            {

                txtTaxedUnitPrice.Attributes["ContentEditable"] = "false";

                txtTaxedUnitPrice.Attributes["style"] = "background-color: Transparent; text-align: right; border-style: none;width: 100px;";

                txtTaxedUnitPrice.Attributes["className"] = "";

            }

        }

    }