方法一: 复制代码 代码如下: int i=0; if (!int.TryParse(this.txtPage.Text, out i)) { Response.Write("<script>alert('请输入有效数字!')</script>"); this.txtPage.Text = string.Empty; }//判断是否是数字 方法二: 复制代码 代码如下: try {
if (Convert.ToInt32(this.txtPage.Text) > totalPage || Convert.ToInt32(this.txtPage.Text)<1) { ClientScript.RegisterClientScriptBlock(GetType(), "提示", "alert('请输入有效数字!')", true); } else { ViewState["pageindex"] = this.txtPage.Text; GetData(); } } catch (Exception) { ClientScript.RegisterClientScriptBlock(GetType(), "提示", "alert('请输入有效数字!')", true); }
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