C# 在後台更改TextBox屬性（可編輯或唯讀）

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"] = "";

}

}

}